Merge branch 'MDL-66601-master' of git://github.com/mihailges/moodle
[moodle.git] / lib / editor / atto / plugins / image / yui / build / button / js / button.min.js.map
1 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CpF,GAAL,CAAS,eAAT,CAHd,CAIAsH,CAAO,CAACC,OAAR,CAAgBF,CAAhB,CACH,CAl2B0F,CAA1D,CAArC","sourcesContent":["// This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/*\n * @package    atto_image\n * @copyright  2013 Damyon Wiese  <damyon@moodle.com>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\n\n/**\n * @module moodle-atto_image_alignment-button\n */\n\n/**\n * Atto image selection tool.\n *\n * @namespace M.atto_image\n * @class Button\n * @extends M.editor_atto.EditorPlugin\n */\n\nvar CSS = {\n        RESPONSIVE: 'img-responsive',\n        INPUTALIGNMENT: 'atto_image_alignment',\n        INPUTALT: 'atto_image_altentry',\n        INPUTHEIGHT: 'atto_image_heightentry',\n        INPUTSUBMIT: 'atto_image_urlentrysubmit',\n        INPUTURL: 'atto_image_urlentry',\n        INPUTSIZE: 'atto_image_size',\n        INPUTWIDTH: 'atto_image_widthentry',\n        IMAGEALTWARNING: 'atto_image_altwarning',\n        IMAGEBROWSER: 'openimagebrowser',\n        IMAGEPRESENTATION: 'atto_image_presentation',\n        INPUTCONSTRAIN: 'atto_image_constrain',\n        INPUTCUSTOMSTYLE: 'atto_image_customstyle',\n        IMAGEPREVIEW: 'atto_image_preview',\n        IMAGEPREVIEWBOX: 'atto_image_preview_box',\n        ALIGNSETTINGS: 'atto_image_button'\n    },\n    SELECTORS = {\n        INPUTURL: '.' + CSS.INPUTURL\n    },\n    ALIGNMENTS = [\n        // Vertical alignment.\n        {\n            name: 'verticalAlign',\n            str: 'alignment_top',\n            value: 'text-top',\n            margin: '0 0.5em'\n        }, {\n            name: 'verticalAlign',\n            str: 'alignment_middle',\n            value: 'middle',\n            margin: '0 0.5em'\n        }, {\n            name: 'verticalAlign',\n            str: 'alignment_bottom',\n            value: 'text-bottom',\n            margin: '0 0.5em',\n            isDefault: true\n        },\n\n        // Floats.\n        {\n            name: 'float',\n            str: 'alignment_left',\n            value: 'left',\n            margin: '0 0.5em 0 0'\n        }, {\n            name: 'float',\n            str: 'alignment_right',\n            value: 'right',\n            margin: '0 0 0 0.5em'\n        }\n    ],\n\n    REGEX = {\n        ISPERCENT: /\\d+%/\n    },\n\n    COMPONENTNAME = 'atto_image',\n\n    TEMPLATE = '' +\n            '<form class=\"atto_form\">' +\n\n                // Add the repository browser button.\n                '{{#if showFilepicker}}' +\n                    '<div class=\"mb-1\">' +\n                        '<label for=\"{{elementid}}_{{CSS.INPUTURL}}\">{{get_string \"enterurl\" component}}</label>' +\n                        '<div class=\"input-group input-append w-100\">' +\n                            '<input class=\"form-control {{CSS.INPUTURL}}\" type=\"url\" ' +\n                            'id=\"{{elementid}}_{{CSS.INPUTURL}}\" size=\"32\"/>' +\n                            '<span class=\"input-group-append\">' +\n                                '<button class=\"btn btn-secondary {{CSS.IMAGEBROWSER}}\" type=\"button\">' +\n                                '{{get_string \"browserepositories\" component}}</button>' +\n                            '</span>' +\n                        '</div>' +\n                    '</div>' +\n                '{{else}}' +\n                    '<div class=\"mb-1\">' +\n                        '<label for=\"{{elementid}}_{{CSS.INPUTURL}}\">{{get_string \"enterurl\" component}}</label>' +\n                        '<input class=\"form-control fullwidth {{CSS.INPUTURL}}\" type=\"url\" ' +\n                        'id=\"{{elementid}}_{{CSS.INPUTURL}}\" size=\"32\"/>' +\n                    '</div>' +\n                '{{/if}}' +\n\n                // Add the Alt box.\n                '<div style=\"display:none\" role=\"alert\" class=\"alert alert-warning mb-1 {{CSS.IMAGEALTWARNING}}\">' +\n                    '{{get_string \"presentationoraltrequired\" component}}' +\n                '</div>' +\n                '<div class=\"mb-1\">' +\n                '<label for=\"{{elementid}}_{{CSS.INPUTALT}}\">{{get_string \"enteralt\" component}}</label>' +\n                '<textarea class=\"form-control fullwidth {{CSS.INPUTALT}}\" ' +\n                'id=\"{{elementid}}_{{CSS.INPUTALT}}\" maxlength=\"125\"></textarea>' +\n\n                // Add the character count.\n                '<div id=\"the-count\" class=\"d-flex justify-content-end small\">' +\n                '<span id=\"currentcount\">0</span>' +\n                '<span id=\"maximumcount\"> / 125</span>' +\n                '</div>' +\n\n                // Add the presentation select box.\n                '<div class=\"form-check\">' +\n                '<input type=\"checkbox\" class=\"form-check-input {{CSS.IMAGEPRESENTATION}}\" ' +\n                    'id=\"{{elementid}}_{{CSS.IMAGEPRESENTATION}}\"/>' +\n                '<label class=\"form-check-label\" for=\"{{elementid}}_{{CSS.IMAGEPRESENTATION}}\">' +\n                    '{{get_string \"presentation\" component}}' +\n                '</label>' +\n                '</div>' +\n                '</div>' +\n\n                // Add the size entry boxes.\n                '<div class=\"mb-1\">' +\n                '<label class=\"\" for=\"{{elementid}}_{{CSS.INPUTSIZE}}\">{{get_string \"size\" component}}</label>' +\n                '<div id=\"{{elementid}}_{{CSS.INPUTSIZE}}\" class=\"form-inline {{CSS.INPUTSIZE}}\">' +\n                '<label class=\"accesshide\" for=\"{{elementid}}_{{CSS.INPUTWIDTH}}\">{{get_string \"width\" component}}</label>' +\n                '<input type=\"text\" class=\"form-control mr-1 input-mini {{CSS.INPUTWIDTH}}\" ' +\n                'id=\"{{elementid}}_{{CSS.INPUTWIDTH}}\" size=\"4\"/> x' +\n\n                // Add the height entry box.\n                '<label class=\"accesshide\" for=\"{{elementid}}_{{CSS.INPUTHEIGHT}}\">{{get_string \"height\" component}}</label>' +\n                '<input type=\"text\" class=\"form-control ml-1 input-mini {{CSS.INPUTHEIGHT}}\" ' +\n                'id=\"{{elementid}}_{{CSS.INPUTHEIGHT}}\" size=\"4\"/>' +\n\n                // Add the constrain checkbox.\n                '<div class=\"form-check ml-2\">' +\n                '<input type=\"checkbox\" class=\"form-check-input {{CSS.INPUTCONSTRAIN}}\" ' +\n                'id=\"{{elementid}}_{{CSS.INPUTCONSTRAIN}}\"/>' +\n                '<label class=\"form-check-label\" for=\"{{elementid}}_{{CSS.INPUTCONSTRAIN}}\">' +\n                '{{get_string \"constrain\" component}}</label>' +\n                '</div>' +\n                '</div>' +\n                '</div>' +\n\n                // Add the alignment selector.\n                '<div class=\"form-inline mb-1\">' +\n                '<label class=\"for=\"{{elementid}}_{{CSS.INPUTALIGNMENT}}\">{{get_string \"alignment\" component}}</label>' +\n                '<select class=\"custom-select {{CSS.INPUTALIGNMENT}}\" id=\"{{elementid}}_{{CSS.INPUTALIGNMENT}}\">' +\n                    '{{#each alignments}}' +\n                        '<option value=\"{{value}}\">{{get_string str ../component}}</option>' +\n                    '{{/each}}' +\n                '</select>' +\n                '</div>' +\n                // Hidden input to store custom styles.\n                '<input type=\"hidden\" class=\"{{CSS.INPUTCUSTOMSTYLE}}\"/>' +\n                '<br/>' +\n\n                // Add the image preview.\n                '<div class=\"mdl-align\">' +\n                '<div class=\"{{CSS.IMAGEPREVIEWBOX}}\">' +\n                    '<img src=\"#\" class=\"{{CSS.IMAGEPREVIEW}}\" alt=\"\" style=\"display: none;\"/>' +\n                '</div>' +\n\n                // Add the submit button and close the form.\n                '<button class=\"btn btn-secondary {{CSS.INPUTSUBMIT}}\" type=\"submit\">' + '' +\n                    '{{get_string \"saveimage\" component}}</button>' +\n                '</div>' +\n            '</form>',\n\n        IMAGETEMPLATE = '' +\n            '<img src=\"{{url}}\" alt=\"{{alt}}\" ' +\n                '{{#if width}}width=\"{{width}}\" {{/if}}' +\n                '{{#if height}}height=\"{{height}}\" {{/if}}' +\n                '{{#if presentation}}role=\"presentation\" {{/if}}' +\n                '{{#if customstyle}}style=\"{{customstyle}}\" {{/if}}' +\n                '{{#if classlist}}class=\"{{classlist}}\" {{/if}}' +\n                '{{#if id}}id=\"{{id}}\" {{/if}}' +\n                '/>';\n\nY.namespace('M.atto_image').Button = Y.Base.create('button', Y.M.editor_atto.EditorPlugin, [], {\n    /**\n     * A reference to the current selection at the time that the dialogue\n     * was opened.\n     *\n     * @property _currentSelection\n     * @type Range\n     * @private\n     */\n    _currentSelection: null,\n\n    /**\n     * The most recently selected image.\n     *\n     * @param _selectedImage\n     * @type Node\n     * @private\n     */\n    _selectedImage: null,\n\n    /**\n     * A reference to the currently open form.\n     *\n     * @param _form\n     * @type Node\n     * @private\n     */\n    _form: null,\n\n    /**\n     * The dimensions of the raw image before we manipulate it.\n     *\n     * @param _rawImageDimensions\n     * @type Object\n     * @private\n     */\n    _rawImageDimensions: null,\n\n    initializer: function() {\n\n        this.addButton({\n            icon: 'e/insert_edit_image',\n            callback: this._displayDialogue,\n            tags: 'img',\n            tagMatchRequiresAll: false\n        });\n        this.editor.delegate('dblclick', this._displayDialogue, 'img', this);\n        this.editor.delegate('click', this._handleClick, 'img', this);\n        this.editor.on('paste', this._handlePaste, this);\n        this.editor.on('drop', this._handleDragDrop, this);\n\n        // e.preventDefault needed to stop the default event from clobbering the desired behaviour in some browsers.\n        this.editor.on('dragover', function(e) {\n            e.preventDefault();\n        }, this);\n        this.editor.on('dragenter', function(e) {\n            e.preventDefault();\n        }, this);\n    },\n\n    /**\n     * Handle a drag and drop event with an image.\n     *\n     * @method _handleDragDrop\n     * @param {EventFacade} e\n     * @return {boolean} false if we handled the event, else true.\n     * @private\n     */\n    _handleDragDrop: function(e) {\n        if (!e._event || !e._event.dataTransfer) {\n            // Drop not fully supported in this browser.\n            return true;\n        }\n\n        return this._handlePasteOrDropHelper(e, e._event.dataTransfer);\n    },\n\n    /**\n     * Handles paste events where - if the thing being pasted is an image.\n     *\n     * @method _handlePaste\n     * @param {EventFacade} e\n     * @return {boolean} false if we handled the event, else true.\n     * @private\n     */\n    _handlePaste: function(e) {\n        if (!e._event || !e._event.clipboardData) {\n            // Paste not fully supported in this browser.\n            return true;\n        }\n\n        return this._handlePasteOrDropHelper(e, e._event.clipboardData);\n    },\n\n    /**\n     * Handle a drag and drop event with an image.\n     *\n     * @method _handleDragDrop\n     * @param {EventFacade} e\n     * @param {DataTransfer} dataTransfer\n     * @return {boolean} false if we handled the event, else true.\n     * @private\n     */\n    _handlePasteOrDropHelper: function(e, dataTransfer) {\n\n        var items = dataTransfer.items,\n            didUpload = false;\n        for (var i = 0; i < items.length; i++) {\n            var item = items[i];\n            if (item.kind !== 'file') {\n                continue;\n            }\n            if (!this._isImage(item.type)) {\n                continue;\n            }\n            this._uploadImage(item.getAsFile());\n            didUpload = true;\n        }\n\n        if (didUpload) {\n            // We handled this.\n            e.preventDefault();\n            e.stopPropagation();\n            return false;\n        } else {\n            // Let someone else try to handle it.\n            return true;\n        }\n    },\n\n    /**\n     * Is this file an image?\n     *\n     * @method _isImage\n     * @param {string} mimeType the file's mime type.\n     * @return {boolean} true if the file has an image mimeType.\n     * @private\n     */\n    _isImage: function(mimeType) {\n        return mimeType.indexOf('image/') === 0;\n    },\n\n    /**\n     * Used by _handleDragDrop and _handlePaste to upload an image and insert it.\n     *\n     * @method _uploadImage\n     * @param {File} fileToSave\n     * @private\n     */\n    _uploadImage: function(fileToSave) {\n\n        var self = this,\n            host = this.get('host'),\n            template = Y.Handlebars.compile(IMAGETEMPLATE);\n\n        host.saveSelection();\n\n        var options = host.get('filepickeroptions').image,\n            savepath = (options.savepath === undefined) ? '/' : options.savepath,\n            formData = new FormData(),\n            timestamp = 0,\n            uploadid = \"\",\n            xhr = new XMLHttpRequest(),\n            imagehtml = \"\",\n            keys = Object.keys(options.repositories);\n\n        formData.append('repo_upload_file', fileToSave);\n        formData.append('itemid', options.itemid);\n\n        // List of repositories is an object rather than an array.  This makes iteration more awkward.\n        for (var i = 0; i < keys.length; i++) {\n            if (options.repositories[keys[i]].type === 'upload') {\n                formData.append('repo_id', options.repositories[keys[i]].id);\n                break;\n            }\n        }\n        formData.append('env', options.env);\n        formData.append('sesskey', M.cfg.sesskey);\n        formData.append('client_id', options.client_id);\n        formData.append('savepath', savepath);\n        formData.append('ctx_id', options.context.id);\n\n        // Insert spinner as a placeholder.\n        timestamp = new Date().getTime();\n        uploadid = 'moodleimage_' + Math.round(Math.random() * 100000) + '-' + timestamp;\n        host.focus();\n        host.restoreSelection();\n        imagehtml = template({\n            url: M.util.image_url(\"i/loading_small\", 'moodle'),\n            alt: M.util.get_string('uploading', COMPONENTNAME),\n            id: uploadid\n        });\n        host.insertContentAtFocusPoint(imagehtml);\n        self.markUpdated();\n\n        // Kick off a XMLHttpRequest.\n        xhr.onreadystatechange = function() {\n            var placeholder = self.editor.one('#' + uploadid),\n                result,\n                file,\n                newhtml,\n                newimage;\n\n            if (xhr.readyState === 4) {\n                if (xhr.status === 200) {\n                    result = JSON.parse(xhr.responseText);\n                    if (result) {\n                        if (result.error) {\n                            if (placeholder) {\n                                placeholder.remove(true);\n                            }\n                            throw new M.core.ajaxException(result);\n                        }\n\n                        file = result;\n                        if (result.event && result.event === 'fileexists') {\n                            // A file with this name is already in use here - rename to avoid conflict.\n                            // Chances are, it's a different image (stored in a different folder on the user's computer).\n                            // If the user wants to reuse an existing image, they can copy/paste it within the editor.\n                            file = result.newfile;\n                        }\n\n                        // Replace placeholder with actual image.\n                        newhtml = template({\n                            url: file.url,\n                            presentation: true\n                        });\n                        newimage = Y.Node.create(newhtml);\n                        if (placeholder) {\n                            placeholder.replace(newimage);\n                        } else {\n                            self.editor.appendChild(newimage);\n                        }\n                        self.markUpdated();\n                    }\n                } else {\n                    Y.use('moodle-core-notification-alert', function() {\n                        new M.core.alert({message: M.util.get_string('servererror', 'moodle')});\n                    });\n                    if (placeholder) {\n                        placeholder.remove(true);\n                    }\n                }\n            }\n        };\n        xhr.open(\"POST\", M.cfg.wwwroot + '/repository/repository_ajax.php?action=upload', true);\n        xhr.send(formData);\n    },\n\n    /**\n     * Handle a click on an image.\n     *\n     * @method _handleClick\n     * @param {EventFacade} e\n     * @private\n     */\n    _handleClick: function(e) {\n        var image = e.target;\n\n        var selection = this.get('host').getSelectionFromNode(image);\n        if (this.get('host').getSelection() !== selection) {\n            this.get('host').setSelection(selection);\n        }\n    },\n\n    /**\n     * Display the image editing tool.\n     *\n     * @method _displayDialogue\n     * @private\n     */\n    _displayDialogue: function() {\n        // Store the current selection.\n        this._currentSelection = this.get('host').getSelection();\n        if (this._currentSelection === false) {\n            return;\n        }\n\n        // Reset the image dimensions.\n        this._rawImageDimensions = null;\n\n        var dialogue = this.getDialogue({\n            headerContent: M.util.get_string('imageproperties', COMPONENTNAME),\n            width: 'auto',\n            focusAfterHide: true,\n            focusOnShowSelector: SELECTORS.INPUTURL\n        });\n        // Set a maximum width for the dialog. This will prevent the dialog width to extend beyond the screen width\n        // in cases when the uploaded image has larger width.\n        dialogue.get('boundingBox').setStyle('maxWidth', '90%');\n        // Set the dialogue content, and then show the dialogue.\n        dialogue.set('bodyContent', this._getDialogueContent())\n                .show();\n    },\n\n    /**\n     * Set the inputs for width and height if they are not set, and calculate\n     * if the constrain checkbox should be checked or not.\n     *\n     * @method _loadPreviewImage\n     * @param {String} url\n     * @private\n     */\n    _loadPreviewImage: function(url) {\n        var image = new Image();\n        var self = this;\n\n        image.onerror = function() {\n            var preview = self._form.one('.' + CSS.IMAGEPREVIEW);\n            preview.setStyles({\n                'display': 'none'\n            });\n\n            // Centre the dialogue when clearing the image preview.\n            self.getDialogue().centerDialogue();\n        };\n\n        image.onload = function() {\n            var input, currentwidth, currentheight, widthRatio, heightRatio;\n\n            self._rawImageDimensions = {\n                width: this.width,\n                height: this.height\n            };\n\n            input = self._form.one('.' + CSS.INPUTWIDTH);\n            currentwidth = input.get('value');\n            if (currentwidth === '') {\n                input.set('value', this.width);\n                currentwidth = \"\" + this.width;\n            }\n            input = self._form.one('.' + CSS.INPUTHEIGHT);\n            currentheight = input.get('value');\n            if (currentheight === '') {\n                input.set('value', this.height);\n                currentheight = \"\" + this.height;\n            }\n            input = self._form.one('.' + CSS.IMAGEPREVIEW);\n            input.setAttribute('src', this.src);\n            input.setStyles({\n                'display': 'inline'\n            });\n\n            input = self._form.one('.' + CSS.INPUTCONSTRAIN);\n            if (currentwidth.match(REGEX.ISPERCENT) && currentheight.match(REGEX.ISPERCENT)) {\n                input.set('checked', currentwidth === currentheight);\n            } else {\n                if (this.width === 0) {\n                    this.width = 1;\n                }\n                if (this.height === 0) {\n                    this.height = 1;\n                }\n                // This is the same as comparing to 3 decimal places.\n                widthRatio = Math.round(1000 * parseInt(currentwidth, 10) / this.width);\n                heightRatio = Math.round(1000 * parseInt(currentheight, 10) / this.height);\n                input.set('checked', widthRatio === heightRatio);\n            }\n\n            // Apply the image sizing.\n            self._autoAdjustSize(self);\n\n            // Centre the dialogue once the preview image has loaded.\n            self.getDialogue().centerDialogue();\n        };\n\n        image.src = url;\n    },\n\n    /**\n     * Return the dialogue content for the tool, attaching any required\n     * events.\n     *\n     * @method _getDialogueContent\n     * @return {Node} The content to place in the dialogue.\n     * @private\n     */\n    _getDialogueContent: function() {\n        var template = Y.Handlebars.compile(TEMPLATE),\n            canShowFilepicker = this.get('host').canShowFilepicker('image'),\n            content = Y.Node.create(template({\n                elementid: this.get('host').get('elementid'),\n                CSS: CSS,\n                component: COMPONENTNAME,\n                showFilepicker: canShowFilepicker,\n                alignments: ALIGNMENTS\n            }));\n\n        this._form = content;\n\n        // Configure the view of the current image.\n        this._applyImageProperties(this._form);\n\n        this._form.one('.' + CSS.INPUTURL).on('blur', this._urlChanged, this);\n        this._form.one('.' + CSS.IMAGEPRESENTATION).on('change', this._updateWarning, this);\n        this._form.one('.' + CSS.INPUTALT).on('change', this._updateWarning, this);\n        this._form.one('.' + CSS.INPUTWIDTH).on('blur', this._autoAdjustSize, this);\n        this._form.one('.' + CSS.INPUTHEIGHT).on('blur', this._autoAdjustSize, this, true);\n        this._form.one('.' + CSS.INPUTCONSTRAIN).on('change', function(event) {\n            if (event.target.get('checked')) {\n                this._autoAdjustSize(event);\n            }\n        }, this);\n        this._form.one('.' + CSS.INPUTURL).on('blur', this._urlChanged, this);\n        this._form.one('.' + CSS.INPUTSUBMIT).on('click', this._setImage, this);\n\n        if (canShowFilepicker) {\n            this._form.one('.' + CSS.IMAGEBROWSER).on('click', function() {\n                    this.get('host').showFilepicker('image', this._filepickerCallback, this);\n            }, this);\n        }\n\n        // Character count.\n        this._form.one('.' + CSS.INPUTALT).on('keyup', this._handleKeyup, this);\n\n        return content;\n    },\n\n    _autoAdjustSize: function(e, forceHeight) {\n        forceHeight = forceHeight || false;\n\n        var keyField = this._form.one('.' + CSS.INPUTWIDTH),\n            keyFieldType = 'width',\n            subField = this._form.one('.' + CSS.INPUTHEIGHT),\n            subFieldType = 'height',\n            constrainField = this._form.one('.' + CSS.INPUTCONSTRAIN),\n            keyFieldValue = keyField.get('value'),\n            subFieldValue = subField.get('value'),\n            imagePreview = this._form.one('.' + CSS.IMAGEPREVIEW),\n            rawPercentage,\n            rawSize;\n\n        // If we do not know the image size, do not do anything.\n        if (!this._rawImageDimensions) {\n            return;\n        }\n\n        // Set the width back to default if it is empty.\n        if (keyFieldValue === '') {\n            keyFieldValue = this._rawImageDimensions[keyFieldType];\n            keyField.set('value', keyFieldValue);\n            keyFieldValue = keyField.get('value');\n        }\n\n        // Clear the existing preview sizes.\n        imagePreview.setStyles({\n            width: null,\n            height: null\n        });\n\n        // Now update with the new values.\n        if (!constrainField.get('checked')) {\n            // We are not keeping the image proportion - update the preview accordingly.\n\n            // Width.\n            if (keyFieldValue.match(REGEX.ISPERCENT)) {\n                rawPercentage = parseInt(keyFieldValue, 10);\n                rawSize = this._rawImageDimensions.width / 100 * rawPercentage;\n                imagePreview.setStyle('width', rawSize + 'px');\n            } else {\n                imagePreview.setStyle('width', keyFieldValue + 'px');\n            }\n\n            // Height.\n            if (subFieldValue.match(REGEX.ISPERCENT)) {\n                rawPercentage = parseInt(subFieldValue, 10);\n                rawSize = this._rawImageDimensions.height / 100 * rawPercentage;\n                imagePreview.setStyle('height', rawSize + 'px');\n            } else {\n                imagePreview.setStyle('height', subFieldValue + 'px');\n            }\n        } else {\n            // We are keeping the image in proportion.\n            if (forceHeight) {\n                // By default we update based on width. Swap the key and sub fields around to achieve a height-based scale.\n                var _temporaryValue;\n                _temporaryValue = keyField;\n                keyField = subField;\n                subField = _temporaryValue;\n\n                _temporaryValue = keyFieldType;\n                keyFieldType = subFieldType;\n                subFieldType = _temporaryValue;\n\n                _temporaryValue = keyFieldValue;\n                keyFieldValue = subFieldValue;\n                subFieldValue = _temporaryValue;\n            }\n\n            if (keyFieldValue.match(REGEX.ISPERCENT)) {\n                // This is a percentage based change. Copy it verbatim.\n                subFieldValue = keyFieldValue;\n\n                // Set the width to the calculated pixel width.\n                rawPercentage = parseInt(keyFieldValue, 10);\n                rawSize = this._rawImageDimensions.width / 100 * rawPercentage;\n\n                // And apply the width/height to the container.\n                imagePreview.setStyle('width', rawSize);\n                rawSize = this._rawImageDimensions.height / 100 * rawPercentage;\n                imagePreview.setStyle('height', rawSize);\n            } else {\n                // Calculate the scaled subFieldValue from the keyFieldValue.\n                subFieldValue = Math.round((keyFieldValue / this._rawImageDimensions[keyFieldType]) *\n                        this._rawImageDimensions[subFieldType]);\n\n                if (forceHeight) {\n                    imagePreview.setStyles({\n                        'width': subFieldValue,\n                        'height': keyFieldValue\n                    });\n                } else {\n                    imagePreview.setStyles({\n                        'width': keyFieldValue,\n                        'height': subFieldValue\n                    });\n                }\n            }\n\n            // Update the subField's value within the form to reflect the changes.\n            subField.set('value', subFieldValue);\n        }\n    },\n\n    /**\n     * Update the dialogue after an image was selected in the File Picker.\n     *\n     * @method _filepickerCallback\n     * @param {object} params The parameters provided by the filepicker\n     * containing information about the image.\n     * @private\n     */\n    _filepickerCallback: function(params) {\n        if (params.url !== '') {\n            var input = this._form.one('.' + CSS.INPUTURL);\n            input.set('value', params.url);\n\n            // Auto set the width and height.\n            this._form.one('.' + CSS.INPUTWIDTH).set('value', '');\n            this._form.one('.' + CSS.INPUTHEIGHT).set('value', '');\n\n            // Load the preview image.\n            this._loadPreviewImage(params.url);\n        }\n    },\n\n    /**\n     * Applies properties of an existing image to the image dialogue for editing.\n     *\n     * @method _applyImageProperties\n     * @param {Node} form\n     * @private\n     */\n    _applyImageProperties: function(form) {\n        var properties = this._getSelectedImageProperties(),\n            img = form.one('.' + CSS.IMAGEPREVIEW);\n\n        if (properties === false) {\n            img.setStyle('display', 'none');\n            // Set the default alignment.\n            ALIGNMENTS.some(function(alignment) {\n                if (alignment.isDefault) {\n                    form.one('.' + CSS.INPUTALIGNMENT).set('value', alignment.value);\n                    return true;\n                }\n\n                return false;\n            }, this);\n\n            return;\n        }\n\n        if (properties.align) {\n            form.one('.' + CSS.INPUTALIGNMENT).set('value', properties.align);\n        }\n        if (properties.customstyle) {\n            form.one('.' + CSS.INPUTCUSTOMSTYLE).set('value', properties.customstyle);\n        }\n        if (properties.width) {\n            form.one('.' + CSS.INPUTWIDTH).set('value', properties.width);\n        }\n        if (properties.height) {\n            form.one('.' + CSS.INPUTHEIGHT).set('value', properties.height);\n        }\n        if (properties.alt) {\n            form.one('.' + CSS.INPUTALT).set('value', properties.alt);\n        }\n        if (properties.src) {\n            form.one('.' + CSS.INPUTURL).set('value', properties.src);\n            this._loadPreviewImage(properties.src);\n        }\n        if (properties.presentation) {\n            form.one('.' + CSS.IMAGEPRESENTATION).set('checked', 'checked');\n        }\n\n        // Update the image preview based on the form properties.\n        this._autoAdjustSize();\n    },\n\n    /**\n     * Gets the properties of the currently selected image.\n     *\n     * The first image only if multiple images are selected.\n     *\n     * @method _getSelectedImageProperties\n     * @return {object}\n     * @private\n     */\n    _getSelectedImageProperties: function() {\n        var properties = {\n                src: null,\n                alt: null,\n                width: null,\n                height: null,\n                align: '',\n                presentation: false\n            },\n\n            // Get the current selection.\n            images = this.get('host').getSelectedNodes(),\n            width,\n            height,\n            style,\n            image;\n\n        if (images) {\n            images = images.filter('img');\n        }\n\n        if (images && images.size()) {\n            image = this._removeLegacyAlignment(images.item(0));\n            this._selectedImage = image;\n\n            style = image.getAttribute('style');\n            properties.customstyle = style;\n\n            width = image.getAttribute('width');\n            if (!width.match(REGEX.ISPERCENT)) {\n                width = parseInt(width, 10);\n            }\n            height = image.getAttribute('height');\n            if (!height.match(REGEX.ISPERCENT)) {\n                height = parseInt(height, 10);\n            }\n\n            if (width !== 0) {\n                properties.width = width;\n            }\n            if (height !== 0) {\n                properties.height = height;\n            }\n            this._getAlignmentPropeties(image, properties);\n            properties.src = image.getAttribute('src');\n            properties.alt = image.getAttribute('alt') || '';\n            properties.presentation = (image.get('role') === 'presentation');\n            return properties;\n        }\n\n        // No image selected - clean up.\n        this._selectedImage = null;\n        return false;\n    },\n\n    /**\n     * Sets the alignment of a properties object.\n     *\n     * @method _getAlignmentPropeties\n     * @param {Node} image The image that the alignment properties should be found for\n     * @param {Object} properties The properties object that is created in _getSelectedImageProperties()\n     * @private\n     */\n    _getAlignmentPropeties: function(image, properties) {\n        var complete = false,\n            defaultAlignment;\n\n        // Check for an alignment value.\n        complete = ALIGNMENTS.some(function(alignment) {\n            var classname = this._getAlignmentClass(alignment.value);\n            if (image.hasClass(classname)) {\n                properties.align = alignment.value;\n                Y.log('Found alignment ' + alignment.value, 'debug', 'atto_image-button');\n\n                return true;\n            }\n\n            if (alignment.isDefault) {\n                defaultAlignment = alignment.value;\n            }\n\n            return false;\n        }, this);\n\n        if (!complete && defaultAlignment) {\n            properties.align = defaultAlignment;\n        }\n    },\n\n    /**\n     * Update the form when the URL was changed. This includes updating the\n     * height, width, and image preview.\n     *\n     * @method _urlChanged\n     * @private\n     */\n    _urlChanged: function() {\n        var input = this._form.one('.' + CSS.INPUTURL);\n\n        if (input.get('value') !== '') {\n            // Load the preview image.\n            this._loadPreviewImage(input.get('value'));\n        }\n    },\n\n    /**\n     * Update the image in the contenteditable.\n     *\n     * @method _setImage\n     * @param {EventFacade} e\n     * @private\n     */\n    _setImage: function(e) {\n        var form = this._form,\n            url = form.one('.' + CSS.INPUTURL).get('value'),\n            alt = form.one('.' + CSS.INPUTALT).get('value'),\n            width = form.one('.' + CSS.INPUTWIDTH).get('value'),\n            height = form.one('.' + CSS.INPUTHEIGHT).get('value'),\n            alignment = this._getAlignmentClass(form.one('.' + CSS.INPUTALIGNMENT).get('value')),\n            presentation = form.one('.' + CSS.IMAGEPRESENTATION).get('checked'),\n            constrain = form.one('.' + CSS.INPUTCONSTRAIN).get('checked'),\n            imagehtml,\n            customstyle = form.one('.' + CSS.INPUTCUSTOMSTYLE).get('value'),\n            classlist = [],\n            host = this.get('host');\n\n        e.preventDefault();\n\n        // Check if there are any accessibility issues.\n        if (this._updateWarning()) {\n            return;\n        }\n\n        // Focus on the editor in preparation for inserting the image.\n        host.focus();\n        if (url !== '') {\n            if (this._selectedImage) {\n                host.setSelection(host.getSelectionFromNode(this._selectedImage));\n            } else {\n                host.setSelection(this._currentSelection);\n            }\n\n            if (constrain) {\n                classlist.push(CSS.RESPONSIVE);\n            }\n\n            // Add the alignment class for the image.\n            classlist.push(alignment);\n\n            if (!width.match(REGEX.ISPERCENT) && isNaN(parseInt(width, 10))) {\n                form.one('.' + CSS.INPUTWIDTH).focus();\n                return;\n            }\n            if (!height.match(REGEX.ISPERCENT) && isNaN(parseInt(height, 10))) {\n                form.one('.' + CSS.INPUTHEIGHT).focus();\n                return;\n            }\n\n            var template = Y.Handlebars.compile(IMAGETEMPLATE);\n            imagehtml = template({\n                url: url,\n                alt: alt,\n                width: width,\n                height: height,\n                presentation: presentation,\n                customstyle: customstyle,\n                classlist: classlist.join(' ')\n            });\n\n            this.get('host').insertContentAtFocusPoint(imagehtml);\n\n            this.markUpdated();\n        }\n\n        this.getDialogue({\n            focusAfterHide: null\n        }).hide();\n\n    },\n\n    /**\n     * Removes any legacy styles added by previous versions of the atto image button.\n     *\n     * @method _removeLegacyAlignment\n     * @param {Y.Node} imageNode\n     * @return {Y.Node}\n     * @private\n     */\n    _removeLegacyAlignment: function(imageNode) {\n        if (!imageNode.getStyle('margin')) {\n            // There is no margin therefore this cannot match any known alignments.\n            return imageNode;\n        }\n\n        ALIGNMENTS.some(function(alignment) {\n            if (imageNode.getStyle(alignment.name) !== alignment.value) {\n                // The name/value do not match. Skip.\n                return false;\n            }\n\n            var normalisedNode = Y.Node.create('<div>');\n            normalisedNode.setStyle('margin', alignment.margin);\n            if (imageNode.getStyle('margin') !== normalisedNode.getStyle('margin')) {\n                // The margin does not match.\n                return false;\n            }\n\n            Y.log('Legacy alignment found and removed.', 'info', 'atto_image-button');\n            imageNode.addClass(this._getAlignmentClass(alignment.value));\n            imageNode.setStyle(alignment.name, null);\n            imageNode.setStyle('margin', null);\n\n            return true;\n        }, this);\n\n        return imageNode;\n    },\n\n    _getAlignmentClass: function(alignment) {\n        return CSS.ALIGNSETTINGS + '_' + alignment;\n    },\n\n    /**\n     * Update the alt text warning live.\n     *\n     * @method _updateWarning\n     * @return {boolean} whether a warning should be displayed.\n     * @private\n     */\n    _updateWarning: function() {\n        var form = this._form,\n            state = true,\n            alt = form.one('.' + CSS.INPUTALT).get('value'),\n            presentation = form.one('.' + CSS.IMAGEPRESENTATION).get('checked');\n        if (alt === '' && !presentation) {\n            form.one('.' + CSS.IMAGEALTWARNING).setStyle('display', 'block');\n            form.one('.' + CSS.INPUTALT).setAttribute('aria-invalid', true);\n            form.one('.' + CSS.IMAGEPRESENTATION).setAttribute('aria-invalid', true);\n            state = true;\n        } else {\n            form.one('.' + CSS.IMAGEALTWARNING).setStyle('display', 'none');\n            form.one('.' + CSS.INPUTALT).setAttribute('aria-invalid', false);\n            form.one('.' + CSS.IMAGEPRESENTATION).setAttribute('aria-invalid', false);\n            state = false;\n        }\n        this.getDialogue().centerDialogue();\n        return state;\n    },\n\n    /**\n     * Handle the keyup to update the character count.\n     */\n    _handleKeyup: function() {\n        var form = this._form,\n            alt = form.one('.' + CSS.INPUTALT).get('value'),\n            characterCount = alt.length,\n            current = form.one('#currentcount');\n        current.setHTML(characterCount);\n    }\n});\n"],"file":"button.min.js"}