/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/* global define, module, require, exports */

/* requires modal, combo, qtip, and nfeditor plugins to be loaded first*/

(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        define(['jquery',
                'Slick',
                'nf.Common',
                'nf.UniversalCapture',
                'nf.Dialog',
                'nf.Storage',
                'nf.Client',
                'nf.ErrorHandler',
                'nf.ProcessGroup',
                'nf.ProcessGroupConfiguration',
                'nf.Settings',
                'nf.ParameterContexts',
                'lodash-core'],
            function ($,
                      Slick,
                      nfCommon,
                      nfUniversalCapture,
                      nfDialog,
                      nfStorage,
                      nfClient,
                      nfErrorHandler,
                      nfProcessGroup,
                      nfProcessGroupConfiguration,
                      nfSettings,
                      nfParameterContexts,
                      _) {
                factory($,
                    Slick,
                    nfCommon,
                    nfUniversalCapture,
                    nfDialog,
                    nfStorage,
                    nfClient,
                    nfErrorHandler,
                    nfProcessGroup,
                    nfProcessGroupConfiguration,
                    nfSettings,
                    nfParameterContexts,
                    _);
            });
    } else if (typeof exports === 'object' && typeof module === 'object') {
        factory(require('jquery'),
            require('Slick'),
            require('nf.Common'),
            require('nf.UniversalCapture'),
            require('nf.Dialog'),
            require('nf.Storage'),
            require('nf.Client'),
            require('nf.ErrorHandler'),
            require('nf.ProcessGroup'),
            require('nf.ProcessGroupConfiguration'),
            require('nf.Settings'),
            recuire('nf.ParameterContexts'),
            require('lodash-core'));
    } else {
        factory(root.$,
            root.Slick,
            root.nf.Common,
            root.nf.UniversalCapture,
            root.nf.Dialog,
            root.nf.Storage,
            root.nf.Client,
            root.nf.ErrorHandler,
            root.nf.ProcessGroup,
            root.nf.ProcessGroupConfiguration,
            root.nf.Settings,
            root.nf.ParameterContexts,
            root._);
    }
}(this, function ($,
                  Slick,
                  nfCommon,
                  nfUniversalCapture,
                  nfDialog,
                  nfStorage,
                  nfClient,
                  nfErrorHandler,
                  nfProcessGroup,
                  nfProcessGroupConfiguration,
                  nfSettings,
                  nfParameterContexts,
                  _) {

    var groupId = null;
    var COMBO_MIN_WIDTH = 212;
    var EDITOR_MIN_WIDTH = 212;
    var EDITOR_MIN_HEIGHT = 100;

    var EL_SUPPORTED_TITLE = '<div>Expression Language (EL) supported</div>';
    var EL_SUPPORTED_DESCRIPTION = '<div>After beginning with the start delimiter <span class="hint-pattern">${</span> use the keystroke '
        + '<span class="hint-keystroke">control+space</span> to see a list of available functions.</div>';
    var EL_UNSUPPORTED_TITLE = '<div>Expression Language (EL) not supported</div>';

    var PARAM_SUPPORTED_TITLE = '<div>Parameters (PARAM) supported</div>';
    var PARAM_SUPPORTED_DESCRIPTION = '<div>After beginning with the start delimiter <span class="hint-pattern">#{</span> use the keystroke '
        + '<span class="hint-keystroke">control+space</span> to see a list of available parameters.</div>';
    var PARAM_UNSUPPORTED_TITLE = '<div>Parameters (PARAM) not supported</div>';

    /**
     * Determines if the specified value represents a reference to a parameter.
     *
     * @param value         The value to check
     * @returns {boolean}   Whether the value represents a reference to a parameter
     */
    var referencesParameter = function (value) {
        if (nfCommon.isDefinedAndNotNull(value)) {
            return value.startsWith('#{') && value.endsWith('}');
        }

        return false;
    };

    var containsParameterReference = function (value) {
        var paramRefsRegex = /#{[a-zA-Z0-9-_. ]+}/;
        return paramRefsRegex.test(value);
    };

    var getSupportTip = function (isEl, isSupported) {
        var supportContainer = $('<div></div>');

        var supportTitleContainer = $('<div></div>')
            .addClass('mode-hint-tip-title-container')
            .appendTo(supportContainer);

        if (isSupported) {
            $('<div></div>')
                .addClass('fa fa-check')
                .appendTo(supportTitleContainer);
            $(isEl ? EL_SUPPORTED_TITLE : PARAM_SUPPORTED_TITLE)
                .addClass('mode-supported')
                .appendTo(supportTitleContainer);

            var supportDescriptionContainer = $('<div></div>')
                .addClass('mode-hint-tip-description-container')
                .appendTo(supportContainer);

            $(isEl ? EL_SUPPORTED_DESCRIPTION : PARAM_SUPPORTED_DESCRIPTION)
                .appendTo(supportDescriptionContainer);
        } else {
            $('<div></div>')
                .addClass('fa fa-ban')
                .appendTo(supportTitleContainer);
            $(isEl ? EL_UNSUPPORTED_TITLE : PARAM_UNSUPPORTED_TITLE)
                .addClass('mode-unsupported')
                .appendTo(supportTitleContainer);
        }

        return supportContainer;
    };

    var getNfEditor = function (getMode) {
        return function (args) {
            var scope = this;
            var initialValue = '';
            var previousValue;
            var propertyDescriptor;
            var isEmpty;
            var wrapper;
            var editor;
            var tip;

            this.init = function () {
                var container = $('body');

                // get the property descriptor
                var gridContainer = $(args.grid.getContainerNode());
                var descriptors = gridContainer.data('descriptors');
                propertyDescriptor = descriptors[args.item.property];

                var mode = getMode(propertyDescriptor);

                // determine if this is a sensitive property
                var sensitive = nfCommon.isSensitiveProperty(propertyDescriptor);

                // record the previous value
                previousValue = args.item[args.column.field];

                // create the wrapper
                wrapper = $('<div></div>')
                    .addClass('slickgrid-nf-editor')
                    .css({
                        'z-index': 14000,
                        'position': 'absolute',
                        'padding': '10px 20px',
                        'overflow': 'hidden',
                        'border-radius': '2px',
                        'box-shadow': 'rgba(0, 0, 0, 0.247059) 0px 2px 5px',
                        'background-color': 'rgb(255, 255, 255)',
                        'cursor': 'move',
                        'transform': 'translate3d(0px, 0px, 0px)'
                    }).draggable({
                        cancel: '.button, .mode-hint-element, .nf-editor, .string-check-container > *',
                        containment: 'parent'
                    }).appendTo(container);

                // create the tip
                tip = $('<div></div>')
                    .addClass('mode-hint-tip')
                    .appendTo(container);

                var supportsEl = mode.supportsEl();
                var supportsParameterReference = mode.supportsParameterReference();
                tip.append(getSupportTip(true, supportsEl));
                tip.append(getSupportTip(false, supportsParameterReference));

                // create the mode hint
                var modeHintContainer = $('<div></div>')
                    .addClass('mode-hint-container')
                    .appendTo(wrapper);
                var modeHintElement = $('<div></div>')
                    .addClass('mode-hint-element')
                    .on('mouseenter', function () {
                        var wrapperPosition = wrapper.position();
                        var tipTop = wrapperPosition.top - tip.outerHeight() + 2;
                        var tipLeft = wrapperPosition.left + wrapper.outerWidth() - tip.outerWidth() + 5;
                        tip.css({
                            top: tipTop + 'px',
                            left: tipLeft + 'px'
                        });
                        tip.show();
                    })
                    .on('mouseleave', function () {
                        tip.hide();
                    })
                    .appendTo(modeHintContainer);

                // el hint
                var elModeHintContainer = $('<div></div>')
                    .addClass('mode-hint')
                    .appendTo(modeHintElement);

                $('<div>EL</div>')
                    .appendTo(elModeHintContainer);
                $('<div></div>')
                    .addClass('mode-hint-value fa')
                    .addClass(supportsEl ? 'fa-check' : 'fa-ban')
                    .appendTo(elModeHintContainer);

                // parameter hint
                var paramModeHitContainer = $('<div></div>')
                    .addClass('mode-hint')
                    .appendTo(modeHintElement);

                $('<div>PARAM</div>')
                    .appendTo(paramModeHitContainer);
                $('<div></div>')
                    .addClass('mode-hint-value fa')
                    .addClass(supportsParameterReference ? 'fa-check' : 'fa-ban')
                    .appendTo(paramModeHitContainer);

                var editorWidth = Math.max(args.position.width, EDITOR_MIN_WIDTH);

                // create the editor
                editor = $('<div></div>')
                    .addClass('nf-editor')
                    .appendTo(wrapper)
                    .nfeditor({
                        languageMode: mode,
                        width: editorWidth,
                        minWidth: EDITOR_MIN_WIDTH,
                        minHeight: EDITOR_MIN_HEIGHT,
                        resizable: true,
                        sensitive: sensitive,
                        escape: function () {
                            scope.cancel();
                        },
                        enter: function () {
                            scope.save();
                        }
                    });

                // create the button panel
                var stringCheckPanel = $('<div class="string-check-container" />');
                stringCheckPanel.appendTo(wrapper);

                // build the custom checkbox
                isEmpty = $('<div class="nf-checkbox string-check" />')
                    .on('change', function (event, args) {
                        // if we are setting as an empty string, disable the editor
                        if (args.isChecked) {
                            editor.nfeditor('setValue', '');
                            editor.nfeditor('setReadOnly', 'nocursor');
                        } else {
                            editor.nfeditor('setValue', initialValue);
                            editor.nfeditor('setReadOnly', false);
                        }
                    })
                    .appendTo(stringCheckPanel);

                $('<span class="string-check-label nf-checkbox-label">&nbsp;Set empty string</span>')
                    .appendTo(stringCheckPanel);

                var ok = $('<div class="button">Ok</div>').css({
                    'color': '#fff',
                    'background': '#728E9B'
                }).hover(
                    function () {
                        $(this).css('background', '#004849');
                    }, function () {
                        $(this).css('background', '#728E9B');
                    }).on('click', scope.save);
                var cancel = $('<div class="secondary-button">Cancel</div>').css({
                    'color': '#004849',
                    'background': '#E3E8EB'
                }).hover(
                    function () {
                        $(this).css('background', '#C7D2D7');
                    }, function () {
                        $(this).css('background', '#E3E8EB');
                    }).on('click', scope.cancel);
                $('<div></div>').css({
                    'position': 'relative',
                    'top': '10px',
                    'left': '20px',
                    'width': '212px',
                    'clear': 'both',
                    'float': 'right'
                }).append(ok).append(cancel).append('<div class="clear"></div>').appendTo(wrapper);

                // position and focus
                scope.position(args.position);
                editor.nfeditor('focus').nfeditor('selectAll');
            };

            this.save = function () {
                args.commitChanges();
            };

            this.cancel = function () {
                editor.nfeditor('setValue', initialValue);
                args.cancelChanges();
            };

            this.hide = function () {
                wrapper.hide();
            };

            this.show = function () {
                wrapper.show();
                editor.nfeditor('refresh');
            };

            this.position = function (position) {
                wrapper.css({
                    'top': position.top - 16,
                    'left': position.left - 42
                });
            };

            this.destroy = function () {
                editor.nfeditor('destroy');
                wrapper.remove();
                tip.remove();
            };

            this.focus = function () {
                editor.nfeditor('focus');
            };

            this.loadValue = function (item) {
                // determine if this is a sensitive property
                var isEmptyChecked = false;
                var sensitive = nfCommon.isSensitiveProperty(propertyDescriptor);

                // determine the value to use when populating the text field
                if (nfCommon.isDefinedAndNotNull(item[args.column.field])) {
                    if (sensitive) {
                        initialValue = nfCommon.config.sensitiveText;
                    } else {
                        initialValue = item[args.column.field];
                        isEmptyChecked = initialValue === '';
                    }
                }

                var checkboxStyle;
                if (isEmptyChecked) {
                    checkboxStyle = 'checkbox-checked';
                    editor.nfeditor('setReadOnly', 'nocursor');
                } else {
                    checkboxStyle = 'checkbox-unchecked';
                }

                isEmpty.addClass(checkboxStyle);
                editor.nfeditor('setValue', initialValue).nfeditor('selectAll');
            };

            this.serializeValue = function () {
                var value = editor.nfeditor('getValue');

                // if the field has been cleared, set the value accordingly
                if (value === '') {
                    // if the user has checked the empty string checkbox, use emtpy string
                    if (isEmpty.hasClass('checkbox-checked')) {
                        return '';
                    }

                    // otherwise if the property is required
                    if (nfCommon.isRequiredProperty(propertyDescriptor)) {
                        if (nfCommon.isBlank(propertyDescriptor.defaultValue)) {
                            return previousValue;
                        }

                        return propertyDescriptor.defaultValue;
                    }

                    // if the property is not required, clear the value
                    return null;
                }

                // if the field wasn't modified return the previous value
                if (editor.nfeditor('isModified') === false) {
                    return previousValue;
                }

                // if there is text specified, use that value
                return value;
            };

            this.applyValue = function (item, state) {
                item[args.column.field] = state;
            };

            this.isValueChanged = function () {
                return scope.serializeValue() !== previousValue;
            };

            this.validate = function () {
                return {
                    valid: true,
                    msg: null
                };
            };

            // initialize the custom long nfel editor
            this.init();
        };
    };

    // combo editor
    var getComboEditor = function (parametersSupported, loadParameters) {
        return function (args) {
            var PARAMETER_REFERENCE_OPTION = {
                text: 'Reference parameter...',
                value: undefined,
                optionClass: 'unset'
            };
            var LOADING_PARAMETERS_OPTION = {
                text: 'Loading parameters...',
                value: null,
                optionClass: 'unset',
                disabled: true
            };
            var CREATE_CONTROLLER_SERVICE_OPTION = {
                text: 'Create new service...',
                value: undefined,
                optionClass: 'unset'
            };

            var scope = this;
            var allowableValueOptions = [];
            var parameterOptions = [];
            var initialValue = null;
            var wrapper;
            var allowableValuesCombo;
            var parameterCombo;
            var propertyDescriptor;
            var parametersLoading = true;
            var parametersLoaded;

            this.init = function () {
                var container = $('body');

                // get the property descriptor
                var gridContainer = $(args.grid.getContainerNode());
                var descriptors = gridContainer.data('descriptors');
                propertyDescriptor = descriptors[args.item.property];

                // get the options
                var propertyContainer = gridContainer.closest('.property-container');
                var configurationOptions = propertyContainer.data('options');

                // create the wrapper
                wrapper = $('<div class="combo-editor"></div>').css({
                    'z-index': 1999,
                    'position': 'absolute',
                    'padding': '10px 20px',
                    'overflow': 'hidden',
                    'border-radius': '2px',
                    'box-shadow': 'rgba(0, 0, 0, 0.247059) 0px 2px 5px',
                    'background-color': 'rgb(255, 255, 255)',
                    'cursor': 'move',
                    'transform': 'translate3d(0px, 0px, 0px)'
                }).draggable({
                    cancel: '.button, .combo',
                    containment: 'parent'
                }).appendTo(container);

                // check for allowable values which will drive which editor to use
                var allowableValues = nfCommon.getAllowableValues(propertyDescriptor);

                // show the allowable values
                if ($.isArray(allowableValues)) {
                    $.each(allowableValues, function (i, allowableValueEntity) {
                        var allowableValue = allowableValueEntity.allowableValue;
                        allowableValueOptions.push({
                            text: allowableValue.displayName,
                            value: allowableValue.value,
                            disabled: allowableValueEntity.canRead === false && allowableValue.value !== args.item['previousValue'],
                            description: nfCommon.escapeHtml(allowableValue.description)
                        });
                    });
                }

                if (propertyDescriptor.required === false) {
                    allowableValueOptions.push({
                        text: 'No value',
                        value: null,
                        optionClass: 'unset'
                    });
                }

                // if this does not represent an identify a controller service
                if (parametersSupported && !nfCommon.isDefinedAndNotNull(propertyDescriptor.identifiesControllerService)) {
                    allowableValueOptions.push(PARAMETER_REFERENCE_OPTION);
                }

                // ensure the options there is at least one option
                if (allowableValueOptions.length === 0) {
                    allowableValueOptions.push({
                        text: 'No value',
                        value: null,
                        optionClass: 'unset',
                        disabled: true
                    });
                }

                // if this descriptor identifies a controller service, provide a way to create one
                if (nfCommon.isDefinedAndNotNull(propertyDescriptor.identifiesControllerService)) {
                    allowableValueOptions.push(CREATE_CONTROLLER_SERVICE_OPTION);
                }

                // determine the max height
                var position = args.position;
                var windowHeight = $(window).height();
                var maxHeight = windowHeight - position.bottom - 16;

                // determine the width
                var comboWidth = Math.max(position.width - 16, COMBO_MIN_WIDTH);

                // build the combo field
                allowableValuesCombo = $('<div class="value-combo combo"></div>').combo({
                    options: allowableValueOptions,
                    maxHeight: maxHeight,
                    select: function (option) {
                        var promptForControllerService = function () {
                            // cancel the current edit
                            scope.cancel();

                            // prompt for the new service type
                            promptForNewControllerService(gridContainer, args.grid, args.item, propertyDescriptor.identifiesControllerService, propertyDescriptor.identifiesControllerServiceBundle, configurationOptions);
                        };

                        if (parametersSupported) {
                            if (nfCommon.isDefinedAndNotNull(parameterCombo)) {
                                if (option === PARAMETER_REFERENCE_OPTION) {
                                    parameterCombo.show();
                                } else {
                                    parameterCombo.hide();

                                    if (option === CREATE_CONTROLLER_SERVICE_OPTION) {
                                        promptForControllerService();
                                    }
                                }
                            }
                        } else if (option === CREATE_CONTROLLER_SERVICE_OPTION) {
                            promptForControllerService()
                        }
                    }
                }).css({
                    'margin-top': '10px',
                    'margin-bottom': '10px',
                    'width': comboWidth + 'px'
                }).appendTo(wrapper);

                if (parametersSupported) {
                    // create the parameter combo
                    parameterCombo = $('<div class="value-combo combo"></div>')
                        .combo({
                            options: [LOADING_PARAMETERS_OPTION],
                            maxHeight: maxHeight
                        })
                        .css({
                            'margin-bottom': '10px',
                            'width': comboWidth + 'px'
                        })
                        .appendTo(wrapper);

                    // load the parameters
                    parametersLoaded = new $.Deferred(function (deferred) {
                        loadParameters(propertyDescriptor, function (parameterListing) {
                            var sortedParams = _.sortBy(parameterListing, 'name');
                            sortedParams.forEach(function (parameter) {
                                parameterOptions.push({
                                    text: parameter.name,
                                    value: '#{' + parameter.name + '}',
                                    description: nfCommon.escapeHtml(parameter.description)
                                });
                            });

                            // create the parameter combo
                            parameterCombo.combo('destroy').combo({
                                options: parameterOptions,
                                maxHeight: maxHeight
                            });

                            deferred.resolve();
                            parametersLoading = false;
                        });
                    }).promise();
                }

                // add buttons for handling user input
                var cancel = $('<div class="secondary-button">Cancel</div>').css({
                    'color': '#004849',
                    'background': '#E3E8EB'
                }).hover(
                    function () {
                        $(this).css('background', '#C7D2D7');
                    }, function () {
                        $(this).css('background', '#E3E8EB');
                    }).on('click', scope.cancel);
                var ok = $('<div class="button">Ok</div>').css({
                    'color': '#fff',
                    'background': '#728E9B'
                }).hover(
                    function () {
                        $(this).css('background', '#004849');
                    }, function () {
                        $(this).css('background', '#728E9B');
                    }).on('click', scope.save);

                $('<div></div>').css({
                    'position': 'relative',
                    'top': '10px',
                    'left': '20px',
                    'width': '212px',
                    'float': 'right'
                }).append(ok).append(cancel).appendTo(wrapper);

                // position and focus
                scope.position(position);
            };

            this.save = function () {
                args.commitChanges();
            };

            this.cancel = function () {
                args.cancelChanges();
            };

            this.hide = function () {
                wrapper.hide();
            };

            this.show = function () {
                wrapper.show();
            };

            this.position = function (position) {
                wrapper.css({
                    'top': position.top - 24,
                    'left': position.left - 20
                });
            };

            this.destroy = function () {
                if (parametersSupported) {
                    parameterCombo.combo('destroy');
                }
                allowableValuesCombo.combo('destroy');
                wrapper.remove();
                allowableValueOptions.length = 0;
                parameterOptions.length = 0;
            };

            this.focus = function () {
            };

            this.loadValue = function (item) {
                var configuredValue;
                if (!nfCommon.isUndefined(item.value)) {
                    configuredValue = item.value;
                } else if (nfCommon.isDefinedAndNotNull(propertyDescriptor.defaultValue)) {
                    configuredValue = propertyDescriptor.defaultValue;
                }

                // if there is a value determine how to populate the editor
                if (!nfCommon.isUndefined(configuredValue)) {
                    initialValue = configuredValue;

                    // determine if the initial value is an allowable value
                    var selectedOption = allowableValueOptions.find(function (option) {
                        return initialValue === option.value;
                    });

                    // if the initial value is an allowable value select it, otherwise see if it is a parameter reference
                    if (!nfCommon.isUndefined(selectedOption)) {
                        allowableValuesCombo.combo('setSelectedOption', selectedOption);
                    } else if (parametersSupported && referencesParameter(initialValue)) {
                        // select the option for reference a parameter
                        allowableValuesCombo.combo('setSelectedOption', PARAMETER_REFERENCE_OPTION);

                        // construct the initial option
                        var initialOption = {
                            value: initialValue
                        };

                        // populate the parameter combo with the parameter reference
                        if (parametersLoading) {
                            parametersLoaded.then(function () {
                                parameterCombo.combo('setSelectedOption', initialOption);
                            });
                        } else {
                            parameterCombo.combo('setSelectedOption', initialOption);
                        }
                    } else {
                        // select the first option
                        allowableValuesCombo.combo('setSelectedOption', allowableValueOptions[0]);
                    }
                } else {
                    // select the first option
                    allowableValuesCombo.combo('setSelectedOption', allowableValueOptions[0]);
                }
            };

            this.serializeValue = function () {
                var selectedOption = allowableValuesCombo.combo('getSelectedOption');
                var selectedValue = selectedOption.value;

                // if the value is undefined, it indicates that the value in the editor references a parameter
                if (parametersSupported && _.isUndefined(selectedValue)) {
                    selectedOption = parameterCombo.combo('getSelectedOption');

                    // if the parameters are still loading, revert to the initial value, otherwise use the selected parameter
                    if (selectedOption === LOADING_PARAMETERS_OPTION) {
                        selectedValue = initialValue;
                    } else {
                        selectedValue = selectedOption.value;
                    }
                }

                return selectedValue;
            };

            this.applyValue = function (item, state) {
                item[args.column.field] = state;
            };

            this.isValueChanged = function () {
                var configuredValue = scope.serializeValue();
                return configuredValue !== initialValue;
            };

            this.validate = function () {
                return {
                    valid: true,
                    msg: null
                };
            };

            // initialize the custom long text editor
            this.init();
        };
    };

    /**
     * Shows the property value for the specified row and cell.
     *
     * @param {type} propertyGrid
     * @param {type} descriptors
     * @param {type} row
     * @param {type} cell
     */
    var showPropertyValue = function (propertyGrid, descriptors, row, cell) {
        // remove any currently open detail dialogs
        nfUniversalCapture.removeAllPropertyDetailDialogs();

        // get the property in question
        var propertyData = propertyGrid.getData();
        var property = propertyData.getItem(row);

        // ensure there is a value
        if (nfCommon.isDefinedAndNotNull(property.value)) {

            // get the descriptor to insert the description tooltip
            var propertyDescriptor = descriptors[property.property];

            // ensure we're not dealing with a sensitive property
            if (!nfCommon.isSensitiveProperty(propertyDescriptor)) {

                // get details about the location of the cell
                var cellNode = $(propertyGrid.getCellNode(row, cell));
                var offset = cellNode.offset();

                // create the wrapper
                var wrapper = $('<div class="property-detail"></div>').css({
                    'z-index': 1999,
                    'position': 'absolute',
                    'padding': '10px 20px',
                    'overflow': 'hidden',
                    'border-radius': '2px',
                    'box-shadow': 'rgba(0, 0, 0, 0.247059) 0px 2px 5px',
                    'background-color': 'rgb(255, 255, 255)',
                    'cursor': 'move',
                    'transform': 'translate3d(0px, 0px, 0px)',
                    'top': offset.top - 24,
                    'left': offset.left - 20
                }).appendTo('body');

                var allowableValues = nfCommon.getAllowableValues(propertyDescriptor);
                if ($.isArray(allowableValues)) {
                    // prevent dragging over the combo
                    wrapper.draggable({
                        cancel: '.button, .combo',
                        containment: 'parent'
                    });

                    // create the read only options
                    var options = [];
                    $.each(allowableValues, function (i, allowableValueEntity) {
                        var allowableValue = allowableValueEntity.allowableValue;
                        options.push({
                            text: allowableValue.displayName,
                            value: allowableValue.value,
                            description: nfCommon.escapeHtml(allowableValue.description),
                            disabled: true
                        });
                    });

                    // ensure the options there is at least one option
                    if (options.length === 0) {
                        options.push({
                            text: 'No value',
                            value: null,
                            optionClass: 'unset',
                            disabled: true
                        });
                    }

                    // determine the max height
                    var windowHeight = $(window).height();
                    var maxHeight = windowHeight - (offset.top + cellNode.height()) - 16;
                    var width = cellNode.width() - 16;

                    // build the combo field
                    $('<div class="value-combo combo"></div>').css({
                        'width': width,
                        'margin-top': '10px',
                        'margin-bottom': '10px'
                    }).combo({
                        options: options,
                        maxHeight: maxHeight,
                        selectedOption: {
                            value: property.value
                        }
                    }).appendTo(wrapper);

                    $('<div class="button">Ok</div>').css({
                        'position': 'relative',
                        'top': '10px',
                        'left': '20px'
                    }).hover(
                        function () {
                            $(this).css('background', '#004849');
                        }, function () {
                            $(this).css('background', '#728E9B');
                        }).on('click', function () {
                        wrapper.hide().remove();
                    }).appendTo(wrapper);
                } else {
                    var editor = null;

                    // so the nfel editor is appropriate
                    if (nfCommon.supportsEl(propertyDescriptor)) {
                        // prevent dragging over the nf editor
                        wrapper.css({
                            'z-index': 1999,
                            'position': 'absolute',
                            'padding': '10px 20px',
                            'overflow': 'hidden',
                            'border-radius': '2px',
                            'box-shadow': 'rgba(0, 0, 0, 0.247059) 0px 2px 5px',
                            'background-color': 'rgb(255, 255, 255)',
                            'cursor': 'move',
                            'transform': 'translate3d(0px, 0px, 0px)',
                            'top': offset.top - 22,
                            'left': offset.left - 43
                        }).draggable({
                            cancel: 'input, textarea, pre, .button, .nf-editor',
                            containment: 'parent'
                        });

                        // create the editor
                        editor = $('<div></div>').addClass('nf-editor').appendTo(wrapper).nfeditor({
                            languageMode: nf.nfel,
                            width: cellNode.width(),
                            content: property.value,
                            minWidth: 175,
                            minHeight: 100,
                            readOnly: true,
                            resizable: true,
                            escape: function () {
                                cleanUp();
                            }
                        });
                    } else {
                        wrapper.css({
                            'z-index': 1999,
                            'position': 'absolute',
                            'padding': '10px 20px',
                            'overflow': 'hidden',
                            'border-radius': '2px',
                            'box-shadow': 'rgba(0, 0, 0, 0.247059) 0px 2px 5px',
                            'background-color': 'rgb(255, 255, 255)',
                            'cursor': 'move',
                            'transform': 'translate3d(0px, 0px, 0px)',
                            'top': offset.top - 26,
                            'left': offset.left - 20
                        });

                        // create the input field
                        $('<textarea hidefocus rows="5" readonly="readonly" />').css({
                            'height': '80px',
                            'resize': 'both',
                            'width': cellNode.width() + 'px',
                            'margin': '10px 0px',
                            'white-space': 'pre'
                        }).text(property.value).on('keydown', function (evt) {
                            if (evt.which === $.ui.keyCode.ESCAPE) {
                                cleanUp();

                                evt.stopImmediatePropagation();
                                evt.preventDefault();
                            }
                        }).appendTo(wrapper);

                        // prevent dragging over standard components
                        wrapper.draggable({
                            containment: 'parent'
                        });
                    }

                    var cleanUp = function () {
                        // clean up the editor
                        if (editor !== null) {
                            editor.nfeditor('destroy');
                        }

                        // clean up the rest
                        wrapper.hide().remove();
                    };

                    // add an ok button that will remove the entire pop up
                    var ok = $('<div class="button">Ok</div>').css({
                        'position': 'relative',
                        'top': '10px',
                        'left': '20px'
                    }).hover(
                        function () {
                            $(this).css('background', '#004849');
                        }, function () {
                            $(this).css('background', '#728E9B');
                        }).on('click', function () {
                        cleanUp();
                    });

                    $('<div></div>').append(ok).append('<div class="clear"></div>').appendTo(wrapper);
                }
            }
        }
    };

    /**
     * Gets the available controller services that implement the specified type and
     * prompts the user to create one.
     *
     * @param {jQuery} gridContainer The grid container
     * @param {slickgrid} grid The grid
     * @param {object} item The item
     * @param {string} serviceType The type of service to create
     * @param {object} bundle The bundle the service impl should implement
     * @param {object} configurationOptions The configuration options
     */
    var promptForNewControllerService = function (gridContainer, grid, item, serviceType, bundle, configurationOptions) {
        $.ajax({
            type: 'GET',
            url: '../nifi-api/flow/controller-service-types',
            data: {
                'serviceType': serviceType,
                'serviceBundleGroup': bundle.group,
                'serviceBundleArtifact': bundle.artifact,
                'serviceBundleVersion': bundle.version
            },
            dataType: 'json'
        }).done(function (response) {
            // get the property descriptor
            var descriptors = gridContainer.data('descriptors');
            var propertyDescriptor = descriptors[item.property];

            var controllerServiceLookup = d3.map();
            var options = [];
            $.each(response.controllerServiceTypes, function (i, controllerServiceType) {
                controllerServiceLookup.set(i, controllerServiceType);
                options.push({
                    text: nfCommon.formatType(controllerServiceType),
                    value: i,
                    description: nfCommon.escapeHtml(controllerServiceType.description)
                });
            });

            // ensure there are some applicable controller services
            if (options.length === 0) {
                nfDialog.showOkDialog({
                    headerText: 'Controller Service',
                    dialogContent: 'No controller service types found that are applicable for this property.'
                });
            } else {
                var newControllerServiceDialogMarkup =
                    '<div id="new-inline-controller-service-dialog" class="hidden dialog medium-dialog cancellable">' +
                        '<div class="dialog-content">' +
                            '<div>' +
                                '<div class="setting-name">Requires Controller Service</div>' +
                                '<div class="setting-field">' +
                                    '<div class="new-inline-controller-service-requirement"></div>' +
                                '</div>' +
                            '</div>' +
                            '<div>' +
                                '<div class="setting-name">Compatible Controller Services</div>' +
                                '<div class="setting-field">' +
                                    '<div class="new-inline-controller-service-combo"></div>' +
                                '</div>' +
                            '</div>' +
                            '<div>' +
                                '<div class="setting-name">Controller Service Name</div>' +
                                '<div class="setting-field">' +
                                    '<input type="text" class="new-inline-controller-service-name"/>' +
                                '</div>' +
                            '</div>' +
                            '<div>' +
                                '<div class="setting-name">Bundle</div>' +
                                '<div class="setting-field">' +
                                    '<div class="new-inline-controller-service-bundle"></div>' +
                                '</div>' +
                            '</div>' +
                            '<div>' +
                                '<div class="setting-name">Tags</div>' +
                                '<div class="setting-field">' +
                                    '<div class="new-inline-controller-service-tags"></div>' +
                                '</div>' +
                            '</div>' +
                            '<div>' +
                                '<div class="setting-name">Description</div>' +
                                '<div class="setting-field">' +
                                    '<div class="new-inline-controller-service-description"></div>' +
                                '</div>' +
                            '</div>' +
                        '</div>' +
                    '</div>';

                var newControllerServiceDialog = $(newControllerServiceDialogMarkup).appendTo(configurationOptions.dialogContainer);
                var newControllerServiceRequirement = newControllerServiceDialog.find('div.new-inline-controller-service-requirement');
                var newControllerServiceCombo = newControllerServiceDialog.find('div.new-inline-controller-service-combo');
                var newControllerServiceNameInput = newControllerServiceDialog.find('input.new-inline-controller-service-name');
                var newControllerServiceBundle = newControllerServiceDialog.find('div.new-inline-controller-service-bundle');
                var newControllerServiceTags = newControllerServiceDialog.find('div.new-inline-controller-service-tags');
                var newControllerServiceDescription = newControllerServiceDialog.find('div.new-inline-controller-service-description');

                // include the required service
                var formattedType = nfCommon.formatType({
                    'type': propertyDescriptor.identifiesControllerService,
                    'bundle': propertyDescriptor.identifiesControllerServiceBundle
                });
                var formattedBundle = nfCommon.formatBundle(propertyDescriptor.identifiesControllerServiceBundle);
                newControllerServiceRequirement.text(formattedType + ' from ' + formattedBundle);

                // sort the text version visible to the user
                options.sort(function (a, b) {
                    var aCS = controllerServiceLookup.get(a.value);
                    var bCS = controllerServiceLookup.get(b.value);

                    var aName = nfCommon.substringAfterLast(aCS.type, '.');
                    var bName = nfCommon.substringAfterLast(bCS.type, '.');

                    return aName === bName ? -nfCommon.sortVersion(aCS.bundle.version, bCS.bundle.version) : aName > bName ? 1 : -1;
                });

                // default to the first service
                var newControllerServiceNameDefault = nfCommon.formatClassName(controllerServiceLookup.get(0));
                newControllerServiceNameInput.val(newControllerServiceNameDefault);

                // build the combo field
                newControllerServiceCombo.combo({
                    options: options,
                    select: function (option) {
                        // set the service details
                        var service = controllerServiceLookup.get(option.value);
                        newControllerServiceBundle.text(nfCommon.formatBundle(service.bundle));
                        newControllerServiceTags.text(service.tags.join(', '));
                        newControllerServiceDescription.text(service.description);

                        // update default when no edits were made
                        if (newControllerServiceNameDefault === newControllerServiceNameInput.val().trim()) {
                            newControllerServiceNameDefault = nfCommon.formatClassName(service);
                            newControllerServiceNameInput.val(newControllerServiceNameDefault);
                        }
                    }
                });

                newControllerServiceDialog.modal({
                    headerText: 'Add Controller Service',
                    scrollableContentStyle: 'scrollable',
                    buttons: [{
                        buttonText: 'Create',
                        color: {
                            base: '#728E9B',
                            hover: '#004849',
                            text: '#ffffff'
                        },
                        handler: {
                            click: function () {
                                create();
                            }
                        }
                    },
                        {
                            buttonText: 'Cancel',
                            color: {
                                base: '#E3E8EB',
                                hover: '#C7D2D7',
                                text: '#004849'
                            },
                            handler: {
                                click: function () {
                                    cancel();
                                }
                            }
                        }]
                });

                var create = function () {
                    var newControllerServiceKey = newControllerServiceCombo.combo('getSelectedOption').value;
                    var newControllerServiceType = controllerServiceLookup.get(newControllerServiceKey);
                    var newControllerServiceName = newControllerServiceNameInput.val();

                    // build the controller service entity
                    var controllerServiceEntity = {
                        'revision': nfClient.getRevision({
                            'revision': {
                                'version': 0,
                            }
                        }),
                        'disconnectedNodeAcknowledged': nfStorage.isDisconnectionAcknowledged(),
                        'component': {
                            'type': newControllerServiceType.type,
                            'bundle': newControllerServiceType.bundle
                        }
                    };

                    // set custom name when specified
                    if (newControllerServiceName.trim() !== '') {
                        controllerServiceEntity.component.name = newControllerServiceName.trim();
                    }

                    // determine the appropriate uri for creating the controller service
                    var uri = '../nifi-api/controller/controller-services';
                    if (nfCommon.isDefinedAndNotNull(groupId)) {
                        uri = '../nifi-api/process-groups/' + encodeURIComponent(groupId) + '/controller-services';
                    }

                    // add the new controller service
                    $.ajax({
                        type: 'POST',
                        url: uri,
                        data: JSON.stringify(controllerServiceEntity),
                        dataType: 'json',
                        contentType: 'application/json'
                    }).done(function (response) {
                        // load the descriptor and update the property
                        configurationOptions.descriptorDeferred(item.property).done(function (descriptorResponse) {
                            var descriptor = descriptorResponse.propertyDescriptor;

                            // store the descriptor for use later
                            var descriptors = gridContainer.data('descriptors');
                            if (!nfCommon.isUndefined(descriptors)) {
                                descriptors[descriptor.name] = descriptor;
                            }

                            // add a row for the new property
                            var data = grid.getData();
                            data.updateItem(item.id, $.extend(item, {
                                value: response.component.id
                            }));

                            // close the dialog
                            newControllerServiceDialog.modal('hide');
                        });

                        // invoke callback if necessary
                        if (typeof configurationOptions.controllerServiceCreatedDeferred === 'function') {
                            configurationOptions.controllerServiceCreatedDeferred(response);
                        }
                    }).fail(nfErrorHandler.handleAjaxError);
                };

                var cancel = function () {
                    newControllerServiceDialog.modal('hide');
                };

                newControllerServiceDialog.modal('show');
            }
        }).fail(nfErrorHandler.handleAjaxError);
    };

    var initPropertiesTable = function (table, options) {
        // function for closing the dialog
        var closeDialog = function () {
            // close the dialog
            var dialog = table.closest('.dialog');
            if (dialog.hasClass('modal')) {
                dialog.modal('hide');
            } else {
                dialog.hide();
            }
        }

        // function for formatting the property name
        var nameFormatter = function (row, cell, value, columnDef, dataContext) {
            var nameWidthOffset = 30;
            var cellContent = $('<div></div>');

            // format the contents
            var formattedValue = $('<span/>').addClass('table-cell').text(value).appendTo(cellContent);
            if (dataContext.type === 'required') {
                formattedValue.addClass('required');
            }

            // get the property descriptor
            var descriptors = table.data('descriptors');
            var propertyDescriptor = descriptors[dataContext.property];

            // show the property description if applicable
            if (nfCommon.isDefinedAndNotNull(propertyDescriptor)) {
                if (!nfCommon.isBlank(propertyDescriptor.description) || !nfCommon.isBlank(propertyDescriptor.defaultValue) || !nfCommon.isBlank(propertyDescriptor.supportsEl)) {
                    $('<div class="fa fa-question-circle" alt="Info" style="float: right;"></div>').appendTo(cellContent);
                    $('<span class="hidden property-descriptor-name"></span>').text(dataContext.property).appendTo(cellContent);
                    nameWidthOffset = 46; // 10 + icon width (10) + icon margin (6) + padding (20)
                }
            }

            // adjust the width accordingly
            formattedValue.width(columnDef.width - nameWidthOffset).ellipsis();

            // return the cell content
            return cellContent.html();
        };

        // function for formatting the property value
        var valueFormatter = function (row, cell, value, columnDef, dataContext) {
            var valueMarkup;
            if (nfCommon.isDefinedAndNotNull(value)) {
                // get the property descriptor
                var descriptors = table.data('descriptors');
                var propertyDescriptor = descriptors[dataContext.property];

                // determine if the property is sensitive
                if (nfCommon.isSensitiveProperty(propertyDescriptor)) {
                    valueMarkup = '<span class="table-cell sensitive">Sensitive value set</span>';
                } else {
                    var resolvedAllowableValue = false;

                    // if there are allowable values, attempt to swap out for the display name
                    var allowableValues = nfCommon.getAllowableValues(propertyDescriptor);
                    if ($.isArray(allowableValues)) {
                        $.each(allowableValues, function (_, allowableValueEntity) {
                            var allowableValue = allowableValueEntity.allowableValue;
                            if (value === allowableValue.value) {
                                value = allowableValue.displayName;
                                resolvedAllowableValue = true;
                                return false;
                            }
                        });
                    }

                    if (value === '') {
                        valueMarkup = '<span class="table-cell blank">Empty string set</span>';
                    } else {
                        if (!resolvedAllowableValue && nfCommon.isDefinedAndNotNull(propertyDescriptor.identifiesControllerService)) {
                            valueMarkup = '<span class="table-cell blank">Incompatible Controller Service Configured</div>';
                        } else {
                            valueMarkup = '<div class="table-cell value"><pre class="ellipsis">' + nfCommon.escapeHtml(value) + '</pre></div>';
                        }
                    }
                }
            } else {
                valueMarkup = '<span class="unset">No value set</span>';
            }

            // format the contents
            var content = $(valueMarkup);
            if (dataContext.type === 'required') {
                content.addClass('required');
            }
            content.find('.ellipsis').width(columnDef.width - 10).ellipsis();

            // return the appropriate markup
            return $('<div />').append(content).html();
        };

        var propertyColumns = [
            {
                id: 'property',
                field: 'displayName',
                name: 'Property',
                sortable: false,
                resizable: true,
                rerenderOnResize: true,
                formatter: nameFormatter
            },
            {
                id: 'value',
                field: 'value',
                name: 'Value',
                sortable: false,
                resizable: true,
                cssClass: 'pointer',
                rerenderOnResize: true,
                formatter: valueFormatter
            }
        ];

        // custom formatter for the actions column
        var actionFormatter = function (row, cell, value, columnDef, dataContext) {
            var markup = '';

            // get the property descriptor
            var descriptors = table.data('descriptors');
            var propertyDescriptor = descriptors[dataContext.property];

            var identifiesControllerService = nfCommon.isDefinedAndNotNull(propertyDescriptor.identifiesControllerService);
            var isConfigured = nfCommon.isDefinedAndNotNull(dataContext.value);

            // check to see if we should provide a button for going to a controller service
            if (identifiesControllerService && isConfigured && (options.supportsGoTo === true)) {
                // ensure the configured value is referencing a valid service
                $.each(propertyDescriptor.allowableValues, function (_, allowableValueEntity) {
                    var allowableValue = allowableValueEntity.allowableValue;
                    if (allowableValue.value === dataContext.value) {
                        markup += '<div class="pointer go-to-service fa fa-long-arrow-right" title="Go To"></div>';
                        return false;
                    }
                });
            }

            var referencesParam = containsParameterReference(dataContext.value);
            var canConvertPropertyToParam = false;
            var canReadParamContext = false;

            if (_.isFunction(options.getParameterContext)) {
                var paramContext = options.getParameterContext(groupId);
                var canWriteParamContext = _.get(paramContext, 'permissions.canWrite', false);
                canReadParamContext = _.get(paramContext, 'permissions.canRead', false);
                canConvertPropertyToParam = canWriteParamContext && canReadParamContext;
            }

            if (referencesParam && canReadParamContext) {
                markup += '<div title="Go to parameter" class="go-to-parameter pointer fa fa-long-arrow-right"></div>';
            }

            if (options.readOnly !== true) {
                if (canConvertPropertyToParam && !referencesParam && !identifiesControllerService) {
                    markup += '<div title="Convert to parameter" class="convert-to-parameter pointer fa fa-level-up"></div>';
                }

                // allow user defined properties to be removed
                if (dataContext.type === 'userDefined') {
                    markup += '<div title="Delete" class="delete-property pointer fa fa-trash"></div>';
                }
            }

            return markup;
        };
        propertyColumns.push(
            {
                id: "actions",
                name: "&nbsp;",
                minWidth: 20,
                width: 20,
                formatter: actionFormatter
            });

        var propertyConfigurationOptions = {
            forceFitColumns: true,
            enableTextSelectionOnCells: true,
            enableCellNavigation: true,
            enableColumnReorder: false,
            editable: options.readOnly !== true,
            enableAddRow: false,
            autoEdit: false,
            rowHeight: 24
        };

        // initialize the dataview
        var propertyData = new Slick.Data.DataView({
            inlineFilters: false
        });
        propertyData.setItems([]);
        propertyData.setFilterArgs({
            searchString: '',
            property: 'hidden'
        });
        propertyData.setFilter(filter);
        propertyData.getItemMetadata = function (index) {
            var item = propertyData.getItem(index);

            // get the property descriptor
            var descriptors = table.data('descriptors');
            var propertyDescriptor = descriptors[item.property];

            // sets the available parameters for the specified property descriptor
            var loadParameters = function (propertyDescriptor, parameterDeferred, setParameters) {
                parameterDeferred(propertyDescriptor, groupId).done(function (parameters) {
                    setParameters(parameters);
                });
            };

            var parametersSupported = typeof options.parameterDeferred === 'function';

            // support el if specified or unsure yet (likely a dynamic property)
            if (nfCommon.isUndefinedOrNull(propertyDescriptor) || nfCommon.supportsEl(propertyDescriptor)) {
                return {
                    columns: {
                        value: {
                            editor: getNfEditor(function (propertyDescriptor) {
                                if (parametersSupported) {
                                    // set the available parameters
                                    nf.nfel.enableParameters();
                                    loadParameters(propertyDescriptor, options.parameterDeferred, nf.nfel.setParameters);
                                } else {
                                    nf.nfel.disableParameters();
                                }
                                return nf.nfel;
                            })
                        }
                    }
                };
            } else {
                // check for allowable values which will drive which editor to use
                var allowableValues = nfCommon.getAllowableValues(propertyDescriptor);
                if ($.isArray(allowableValues)) {
                    return {
                        columns: {
                            value: {
                                editor: getComboEditor(parametersSupported, function (propertyDescriptor, setParameters) {
                                    if (parametersSupported) {
                                        // set the available parameters
                                        loadParameters(propertyDescriptor, options.parameterDeferred, setParameters);
                                    }
                                })
                            }
                        }
                    };
                } else {
                    return {
                        columns: {
                            value: {
                                editor: getNfEditor(function (propertyDescriptor) {
                                    if (parametersSupported) {
                                        // set the available parameters
                                        nf.nfpr.enableParameters()
                                        loadParameters(propertyDescriptor, options.parameterDeferred, nf.nfpr.setParameters);
                                    } else {
                                        nf.nfpr.disableParameters();
                                    }
                                    return nf.nfpr;
                                })
                            }
                        }
                    };
                }
            }
        };

        var goToControllerService = function (property) {
            $.ajax({
                type: 'GET',
                url: '../nifi-api/controller-services/' + encodeURIComponent(property.value),
                dataType: 'json'
            }).done(function (controllerServiceEntity) {
                // close the dialog
                closeDialog();

                var controllerService = controllerServiceEntity.component;
                $.Deferred(function (deferred) {
                    if (nfCommon.isDefinedAndNotNull(controllerService.parentGroupId)) {
                        nfProcessGroup.enterGroup(controllerService.parentGroupId).done(function () {
                            if ($('#process-group-configuration').is(':visible')) {
                                nfProcessGroupConfiguration.loadConfiguration(controllerService.parentGroupId).done(function () {
                                    deferred.resolve();
                                });
                            } else {
                                nfProcessGroupConfiguration.showConfiguration(controllerService.parentGroupId).done(function () {
                                    deferred.resolve();
                                });
                            }
                        });
                    } else {
                        if ($('#settings').is(':visible')) {
                            // reload the settings
                            nfSettings.loadSettings().done(function () {
                                deferred.resolve();
                            });
                        } else {
                            // reload the settings and show
                            nfSettings.showSettings().done(function () {
                                deferred.resolve();
                            });
                        }
                    }
                }).done(function () {
                    if (nfCommon.isDefinedAndNotNull(controllerService.parentGroupId)) {
                        nfProcessGroupConfiguration.selectControllerService(property.value);
                    } else {
                        nfSettings.selectControllerService(property.value);
                    }
                });
            }).fail(nfErrorHandler.handleAjaxError);
        };

        // initialize the grid
        var propertyGrid = new Slick.Grid(table, propertyData, propertyColumns, propertyConfigurationOptions);
        propertyGrid.setSelectionModel(new Slick.RowSelectionModel());
        propertyGrid.onClick.subscribe(function (e, args) {
            if (propertyGrid.getColumns()[args.cell].id === 'value') {
                if (options.readOnly === true) {
                    var descriptors = table.data('descriptors');
                    showPropertyValue(propertyGrid, descriptors, args.row, args.cell);
                } else {
                    // edits the clicked cell
                    propertyGrid.gotoCell(args.row, args.cell, true);
                }

                // prevents standard edit logic
                e.stopImmediatePropagation();
            } else if (propertyGrid.getColumns()[args.cell].id === 'actions') {
                var property = propertyData.getItem(args.row);

                var target = $(e.target);
                if (target.hasClass('delete-property')) {
                    // mark the property in question for removal and refresh the table
                    propertyData.updateItem(property.id, $.extend(property, {
                        hidden: true
                    }));

                    // prevents standard edit logic
                    e.stopImmediatePropagation();
                } else if (target.hasClass('go-to-service')) {
                    if (options.readOnly === true) {
                        goToControllerService(property);
                    } else {
                        // load the property descriptor if possible
                        if (typeof options.goToServiceDeferred === 'function') {
                            options.goToServiceDeferred().done(function () {
                                goToControllerService(property);
                            });
                        }
                    }
                } else if (target.hasClass('convert-to-parameter')) {
                    var parameterContext;
                    var canConvertPropertyToParam = false;
                    if (_.isFunction(options.getParameterContext)) {
                        parameterContext = options.getParameterContext(groupId);
                        var canWriteParamContext = _.get(parameterContext, 'permissions.canWrite', false);
                        var canReadParamContext = _.get(parameterContext, 'permissions.canRead', false);
                        canConvertPropertyToParam = canWriteParamContext && canReadParamContext;
                    }

                    if (options.readOnly !== true && canConvertPropertyToParam) {
                        var descriptors = table.data('descriptors');
                        var propertyDescriptor = descriptors[property.property];

                        nfParameterContexts.convertPropertyToParameter(property, propertyDescriptor, parameterContext.id)
                            .done(function (parameter) {
                                var updatedItem = _.extend({}, property, {
                                    previousValue: property.value,
                                    value: '#{' + parameter.name + '}'
                                });
                                // set the property value to the reference the parameter that was created
                                propertyData.updateItem(property.id, updatedItem);
                            });
                    }
                } else if (target.hasClass('go-to-parameter')) {
                    var parameterContext;
                    if (_.isFunction(options.getParameterContext)) {
                        parameterContext = options.getParameterContext(groupId);
                        var canReadParamContext = _.get(parameterContext, 'permissions.canRead', false);

                        if (canReadParamContext && !_.isNil(property.value)) {
                            // get the reference parameter
                            var paramRefsRegex = /#{([a-zA-Z0-9-_. ]+)}/;
                            var result = property.value.match(paramRefsRegex);
                            if (!_.isEmpty(result) && result.length === 2) {
                                // close the dialog since we are sending the user to the parameter context
                                closeDialog();

                                var parameterName = result[1];
                                nfParameterContexts.showParameterContext(parameterContext.id, null, parameterName);
                            }
                        }
                    }
                }
            }
        });
        propertyGrid.onKeyDown.subscribe(function (e, args) {
            if (e.which === $.ui.keyCode.ESCAPE) {
                var editorLock = propertyGrid.getEditorLock();
                if (editorLock.isActive()) {
                    editorLock.cancelCurrentEdit();

                    // prevents standard cancel logic - standard logic does
                    // not stop propagation when escape is pressed
                    e.stopImmediatePropagation();
                    e.preventDefault();
                }
            }
        });

        if (options.readOnly !== true) {
            propertyGrid.onBeforeCellEditorDestroy.subscribe(function (e, args) {
                setTimeout(function() {
                    propertyGrid.resizeCanvas();
                }, 50);
            });
        }

        // wire up the dataview to the grid
        propertyData.onRowCountChanged.subscribe(function (e, args) {
            propertyGrid.updateRowCount();
            propertyGrid.render();
        });
        propertyData.onRowsChanged.subscribe(function (e, args) {
            propertyGrid.invalidateRows(args.rows);
            propertyGrid.render();
        });

        // hold onto an instance of the grid and listen for mouse events to add tooltips where appropriate
        table.data('gridInstance', propertyGrid).on('mouseenter', 'div.slick-cell', function (e) {
            var infoIcon = $(this).find('div.fa-question-circle');
            if (infoIcon.length && !infoIcon.data('qtip')) {
                var property = $(this).find('span.property-descriptor-name').text();

                // get the property descriptor
                var descriptors = table.data('descriptors');
                var propertyDescriptor = descriptors[property];

                // get the history
                var history = table.data('history');
                var propertyHistory = history[property];

                // format the tooltip
                var tooltip = nfCommon.formatPropertyTooltip(propertyDescriptor, propertyHistory);

                if (nfCommon.isDefinedAndNotNull(tooltip)) {
                    infoIcon.qtip($.extend({},
                        nfCommon.config.tooltipConfig,
                        {
                            content: tooltip
                        }));
                }
            }
        });
    };

    var saveRow = function (table) {
        // get the property grid to commit the current edit
        var propertyGrid = table.data('gridInstance');
        if (nfCommon.isDefinedAndNotNull(propertyGrid)) {
            var editController = propertyGrid.getEditController();
            editController.commitCurrentEdit();
        }
    };

    /**
     * Performs the filtering.
     *
     * @param {object} item     The item subject to filtering
     * @param {object} args     Filter arguments
     * @returns {Boolean}       Whether or not to include the item
     */
    var filter = function (item, args) {
        return item.hidden === false;
    };

    /**
     * Loads the specified properties.
     *
     * @param {type} table
     * @param {type} properties
     * @param {type} descriptors
     * @param {type} history
     */
    var loadProperties = function (table, properties, descriptors, history) {
        // save the descriptors and history
        table.data({
            'descriptors': descriptors,
            'history': history
        });

        // get the grid
        var propertyGrid = table.data('gridInstance');
        var propertyData = propertyGrid.getData();

        // generate the properties
        if (nfCommon.isDefinedAndNotNull(properties)) {
            propertyData.beginUpdate();

            var i = 0;
            $.each(properties, function (name, value) {
                // get the property descriptor
                var descriptor = descriptors[name];

                // determine the property type
                var type = 'userDefined';
                var displayName = name;
                if (nfCommon.isDefinedAndNotNull(descriptor)) {
                    if (nfCommon.isRequiredProperty(descriptor)) {
                        type = 'required';
                    } else if (nfCommon.isDynamicProperty(descriptor)) {
                        type = 'userDefined';
                    } else {
                        type = 'optional';
                    }

                    // use the display name if possible
                    displayName = descriptor.displayName;

                    // determine the value
                    if (nfCommon.isNull(value) && nfCommon.isDefinedAndNotNull(descriptor.defaultValue)) {
                        value = descriptor.defaultValue;
                    }
                }

                // add the row
                propertyData.addItem({
                    id: i++,
                    hidden: false,
                    property: name,
                    displayName: displayName,
                    previousValue: value,
                    value: value,
                    type: type
                });
            });

            propertyData.endUpdate();
        }
    };

    /**
     * Clears the property table container.
     *
     * @param {jQuery} propertyTableContainer
     */
    var clear = function (propertyTableContainer) {
        var options = propertyTableContainer.data('options');
        if (options.readOnly === true) {
            nfUniversalCapture.removeAllPropertyDetailDialogs();
        } else {
            // clear any existing new property dialogs
            if (nfCommon.isDefinedAndNotNull(options.dialogContainer)) {
                $('#new-property-dialog').modal("hide");
            }
        }

        // clean up data
        var table = propertyTableContainer.find('div.property-table');
        table.removeData('descriptors history');

        // clean up any tooltips that may have been generated
        nfCommon.cleanUpTooltips(table, 'div.fa-question-circle');

        // clear the data in the grid
        var propertyGrid = table.data('gridInstance');
        var propertyData = propertyGrid.getData();
        propertyData.setItems([]);
    };

    var methods = {
        /**
         * Create a property table. The options are specified in the following
         * format:
         *
         * {
         *   readOnly: true,
         *   dialogContainer: 'body',
         *   descriptorDeferred: function () {
         *      return $.Deferred(function (deferred) {
         *          deferred.resolve();
         *      }).promise;
         *   },
         *   supportsGoTo: true,
         *   goToServiceDeferred: function () {
         *      return $.Deferred(function (deferred) {
         *          deferred.resolve();
         *      }).promise;
         *   }
         * }
         *
         * @argument {object} options The options for the tag cloud
         */
        init: function (options) {
            return this.each(function () {
                // ensure the options have been properly specified
                if (nfCommon.isDefinedAndNotNull(options)) {
                    // get the tag cloud
                    var propertyTableContainer = $(this);

                    // clear any current contents, remote events, and store options
                    propertyTableContainer.empty().unbind().addClass('property-container').data('options', options);

                    // build the component
                    var header = $('<div class="properties-header"></div>').appendTo(propertyTableContainer);
                    $('<div class="required-property-note">Required field</div>').appendTo(header);

                    // build the table
                    var table = $('<div class="property-table"></div>').appendTo(propertyTableContainer);

                    // optionally add a add new property button
                    if (options.readOnly !== true && nfCommon.isDefinedAndNotNull(options.dialogContainer)) {
                        // build the new property dialog
                        var newPropertyDialogMarkup =
                            '<div id="new-property-dialog" class="dialog cancellable small-dialog hidden">' +
                                '<div class="dialog-content">' +
                                    '<div>' +
                                    '<div class="setting-name">Property name</div>' +
                                        '<div class="setting-field new-property-name-container">' +
                                            '<input class="new-property-name" type="text"/>' +
                                        '</div>' +
                                    '</div>' +
                                '</div>' +
                            '</div>';

                        var newPropertyDialog = $(newPropertyDialogMarkup).appendTo(options.dialogContainer);
                        var newPropertyNameField = newPropertyDialog.find('input.new-property-name');

                        newPropertyDialog.modal({
                            headerText: 'Add Property',
                            scrollableContentStyle: 'scrollable',
                            buttons: [{
                                buttonText: 'Ok',
                                color: {
                                    base: '#728E9B',
                                    hover: '#004849',
                                    text: '#ffffff'
                                },
                                handler: {
                                    click: function () {
                                        add();
                                    }
                                }
                            },
                                {
                                    buttonText: 'Cancel',
                                    color: {
                                        base: '#E3E8EB',
                                        hover: '#C7D2D7',
                                        text: '#004849'
                                    },
                                    handler: {
                                        click: function () {
                                            cancel();
                                        }
                                    }
                                }]
                        });

                        var add = function () {
                            var propertyName = $.trim(newPropertyNameField.val());

                            // ensure the property name is specified
                            if (propertyName !== '') {
                                var propertyGrid = table.data('gridInstance');
                                var propertyData = propertyGrid.getData();

                                // ensure the property name is unique
                                var existingItem = null;
                                $.each(propertyData.getItems(), function (_, item) {
                                    if (propertyName === item.property) {
                                        existingItem = item;
                                        return false;
                                    }
                                });

                                if (existingItem === null) {
                                    // load the descriptor and add the property
                                    options.descriptorDeferred(propertyName).done(function (response) {
                                        var descriptor = response.propertyDescriptor;

                                        // store the descriptor for use later
                                        var descriptors = table.data('descriptors');
                                        if (!nfCommon.isUndefined(descriptors)) {
                                            descriptors[descriptor.name] = descriptor;
                                        }

                                        // add a row for the new property
                                        var id = propertyData.getLength();
                                        propertyData.addItem({
                                            id: id,
                                            hidden: false,
                                            property: propertyName,
                                            displayName: propertyName,
                                            previousValue: null,
                                            value: null,
                                            type: 'userDefined'
                                        });

                                        // select the new properties row
                                        var row = propertyData.getRowById(id);
                                        propertyGrid.setActiveCell(row, propertyGrid.getColumnIndex('value'));
                                        propertyGrid.editActiveCell();
                                    });
                                } else {
                                    // if this row is currently hidden, clear the value and show it
                                    if (existingItem.hidden === true) {
                                        propertyData.updateItem(existingItem.id, $.extend(existingItem, {
                                            hidden: false,
                                            previousValue: null,
                                            value: null
                                        }));

                                        // select the new properties row
                                        var row = propertyData.getRowById(existingItem.id);
                                        propertyGrid.setActiveCell(row, propertyGrid.getColumnIndex('value'));
                                        propertyGrid.editActiveCell();
                                    } else {
                                        nfDialog.showOkDialog({
                                            headerText: 'Property Exists',
                                            dialogContent: 'A property with this name already exists.'
                                        });

                                        // select the existing properties row
                                        var row = propertyData.getRowById(existingItem.id);
                                        propertyGrid.setSelectedRows([row]);
                                        propertyGrid.scrollRowIntoView(row);
                                    }
                                }
                            } else {
                                nfDialog.showOkDialog({
                                    headerText: 'Property Name',
                                    dialogContent: 'Property name must be specified.'
                                });
                            }

                            // close the dialog
                            newPropertyDialog.modal('hide');
                        };

                        var cancel = function () {
                            newPropertyDialog.modal('hide');
                        };

                        // enable enter to add
                        newPropertyNameField.on('keydown', function (e) {
                            var code = e.keyCode ? e.keyCode : e.which;
                            if (code === $.ui.keyCode.ENTER) {
                                add();

                                // prevents the enter from propagating into the field for editing the new property value
                                e.stopImmediatePropagation();
                                e.preventDefault();
                            }
                        });

                        newPropertyDialog.on('click', 'div.new-property-ok', add).on('click', 'div.new-property-cancel', cancel);

                        // build the control to open the new property dialog
                        var addProperty = $('<div class="add-property"></div>').appendTo(header);
                        $('<button class="button fa fa-plus"></button>').on('click', function () {
                            // close all fields currently being edited
                            saveRow(table);

                            // clear the dialog
                            newPropertyNameField.val('');

                            // open the new property dialog
                            newPropertyDialog.modal('show');

                            // set the initial focus
                            newPropertyNameField.focus();
                        }).appendTo(addProperty);
                    }
                    $('<div class="clear"></div>').appendTo(header);

                    // initializes the properties table
                    initPropertiesTable(table, options);
                }
            });
        },

        /**
         * Loads the specified properties.
         *
         * @argument {object} properties        The properties
         * @argument {map} descriptors          The property descriptors (property name -> property descriptor)
         * @argument {map} history
         */
        loadProperties: function (properties, descriptors, history) {
            return this.each(function () {
                var table = $(this).find('div.property-table');
                loadProperties(table, properties, descriptors, history);
            });
        },

        /**
         * Saves the last edited row in the specified grid.
         */
        saveRow: function () {
            return this.each(function () {
                var table = $(this).find('div.property-table');
                saveRow(table);
            });
        },

        /**
         * Update the size of the grid based on its container's current size.
         */
        resetTableSize: function () {
            return this.each(function () {
                var table = $(this).find('div.property-table');
                var propertyGrid = table.data('gridInstance');
                if (nfCommon.isDefinedAndNotNull(propertyGrid)) {
                    propertyGrid.resizeCanvas();
                }
            });
        },

        /**
         * Cancels the edit in the specified row.
         */
        cancelEdit: function () {
            return this.each(function () {
                var table = $(this).find('div.property-table');
                var propertyGrid = table.data('gridInstance');
                if (nfCommon.isDefinedAndNotNull(propertyGrid)) {
                    var editController = propertyGrid.getEditController();
                    editController.cancelCurrentEdit();
                }
            });
        },

        /**
         * Destroys the property table.
         */
        destroy: function () {
            return this.each(function () {
                var propertyTableContainer = $(this);
                var options = propertyTableContainer.data('options');

                if (nfCommon.isDefinedAndNotNull(options)) {
                    // clear the property table container
                    clear(propertyTableContainer);

                    // clear any existing new property dialogs
                    if (nfCommon.isDefinedAndNotNull(options.dialogContainer)) {
                        $('#new-property-dialog').modal("hide");
                        $(options.dialogContainer).children('div.new-inline-controller-service-dialog').remove();
                    }
                }
            });
        },

        /**
         * Clears the property table.
         */
        clear: function () {
            return this.each(function () {
                clear($(this));
            });
        },

        /**
         * Determines if a save is required for the first matching element.
         */
        isSaveRequired: function () {
            var isSaveRequired = false;

            this.each(function () {
                // get the property grid
                var table = $(this).find('div.property-table');
                var propertyGrid = table.data('gridInstance');
                var propertyData = propertyGrid.getData();

                // determine if any of the properties have changed
                $.each(propertyData.getItems(), function () {
                    if (this.value !== this.previousValue) {
                        isSaveRequired = true;
                        return false;
                    }
                });

                return false;
            });

            return isSaveRequired;
        },

        /**
         * Marshalls the properties for the first matching element.
         */
        marshalProperties: function () {
            // properties
            var properties = {};

            this.each(function () {
                // get the property grid data
                var table = $(this).find('div.property-table');
                var propertyGrid = table.data('gridInstance');
                var propertyData = propertyGrid.getData();
                $.each(propertyData.getItems(), function () {
                    if (this.hidden === true) {
                        // hidden properties were removed by the user, clear the value
                        properties[this.property] = null;
                    } else if (this.value !== this.previousValue) {
                        // the value has changed
                        properties[this.property] = this.value;
                    }
                });

                return false;
            });

            return properties;
        },

        /**
         * Sets the current group id. This is used to indicate where inline Controller Services are created
         * and to obtain the parameter context.
         */
        setGroupId: function (currentGroupId) {
            return this.each(function () {
                groupId = currentGroupId;
            });
        }
    };

    $.fn.propertytable = function (method) {
        if (methods[method]) {
            return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
        } else {
            return methods.init.apply(this, arguments);
        }
    };
}));
