/**

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* The functions necessary for editing images.

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*

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* @since 2.9.0

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* @output wp-admin/js/image-edit.js

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*/

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/* global ajaxurl, confirm */

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(function($) {

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var __ = wp.i18n.__;

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/**

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* Contains all the methods to initialize and control the image editor.

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*

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* @namespace imageEdit

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*/

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var imageEdit = window.imageEdit = {

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iasapi : {},

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hold : {},

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postid : '',

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_view : false,

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/**

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* Enable crop tool.

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*/

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toggleCropTool: function( postid, nonce, cropButton ) {

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var img = $( '#image-preview-' + postid ),

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selection = this.iasapi.getSelection();

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imageEdit.toggleControls( cropButton );

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var $el = $( cropButton );

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var state = ( $el.attr( 'aria-expanded' ) === 'true' ) ? 'true' : 'false';

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// Crop tools have been closed.

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if ( 'false' === state ) {

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// Cancel selection, but do not unset inputs.

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this.iasapi.cancelSelection();

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imageEdit.setDisabled($('.imgedit-crop-clear'), 0);

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} else {

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imageEdit.setDisabled($('.imgedit-crop-clear'), 1);

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// Get values from inputs to restore previous selection.

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var startX = ( $( '#imgedit-start-x-' + postid ).val() ) ? $('#imgedit-start-x-' + postid).val() : 0;

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var startY = ( $( '#imgedit-start-y-' + postid ).val() ) ? $('#imgedit-start-y-' + postid).val() : 0;

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var width = ( $( '#imgedit-sel-width-' + postid ).val() ) ? $('#imgedit-sel-width-' + postid).val() : img.innerWidth();

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var height = ( $( '#imgedit-sel-height-' + postid ).val() ) ? $('#imgedit-sel-height-' + postid).val() : img.innerHeight();

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// Ensure selection is available, otherwise reset to full image.

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if ( isNaN( selection.x1 ) ) {

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this.setCropSelection( postid, { 'x1': startX, 'y1': startY, 'x2': width, 'y2': height, 'width': width, 'height': height } );

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selection = this.iasapi.getSelection();

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}

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// If we don't already have a selection, select the entire image.

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if ( 0 === selection.x1 && 0 === selection.y1 && 0 === selection.x2 && 0 === selection.y2 ) {

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this.iasapi.setSelection( 0, 0, img.innerWidth(), img.innerHeight(), true );

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this.iasapi.setOptions( { show: true } );

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this.iasapi.update();

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} else {

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this.iasapi.setSelection( startX, startY, width, height, true );

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this.iasapi.setOptions( { show: true } );

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this.iasapi.update();

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}

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}

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},

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/**

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* Handle crop tool clicks.

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*/

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handleCropToolClick: function( postid, nonce, cropButton ) {

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if ( cropButton.classList.contains( 'imgedit-crop-clear' ) ) {

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this.iasapi.cancelSelection();

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imageEdit.setDisabled($('.imgedit-crop-apply'), 0);

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$('#imgedit-sel-width-' + postid).val('');

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$('#imgedit-sel-height-' + postid).val('');

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$('#imgedit-start-x-' + postid).val('0');

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$('#imgedit-start-y-' + postid).val('0');

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$('#imgedit-selection-' + postid).val('');

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} else {

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// Otherwise, perform the crop.

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imageEdit.crop( postid, nonce , cropButton );

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}

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},

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/**

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* Converts a value to an integer.

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*

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* @since 2.9.0

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*

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* @memberof imageEdit

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*

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* @param {number} f The float value that should be converted.

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*

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* @return {number} The integer representation from the float value.

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*/

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intval : function(f) {

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/*

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* Bitwise OR operator: one of the obscure ways to truncate floating point figures,

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* worth reminding JavaScript doesn't have a distinct "integer" type.

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*/

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return f | 0;

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},

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/**

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* Adds the disabled attribute and class to a single form element or a field set.

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*

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* @since 2.9.0

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*

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* @memberof imageEdit

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*

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* @param {jQuery} el The element that should be modified.

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* @param {boolean|number} s The state for the element. If set to true

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* the element is disabled,

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* otherwise the element is enabled.

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* The function is sometimes called with a 0 or 1

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* instead of true or false.

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*

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* @return {void}

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*/

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setDisabled : function( el, s ) {

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/*

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* `el` can be a single form element or a fieldset. Before #28864, the disabled state on

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* some text fields was handled targeting $('input', el). Now we need to handle the

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* disabled state on buttons too so we can just target `el` regardless if it's a single

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* element or a fieldset because when a fieldset is disabled, its descendants are disabled too.

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*/

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if ( s ) {

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el.removeClass( 'disabled' ).prop( 'disabled', false );

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} else {

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el.addClass( 'disabled' ).prop( 'disabled', true );

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}

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},

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/**

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* Initializes the image editor.

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*

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* @since 2.9.0

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*

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* @memberof imageEdit

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*

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* @param {number} postid The post ID.

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*

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* @return {void}

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*/

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init : function(postid) {

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var t = this, old = $('#image-editor-' + t.postid);

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if ( t.postid !== postid && old.length ) {

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t.close(t.postid);

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}

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t.hold.sizer = parseFloat( $('#imgedit-sizer-' + postid).val() );

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t.postid = postid;

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$('#imgedit-response-' + postid).empty();

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$('#imgedit-panel-' + postid).on( 'keypress', function(e) {

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var nonce = $( '#imgedit-nonce-' + postid ).val();

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if ( e.which === 26 && e.ctrlKey ) {

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imageEdit.undo( postid, nonce );

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}

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if ( e.which === 25 && e.ctrlKey ) {

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imageEdit.redo( postid, nonce );

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}

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});

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$('#imgedit-panel-' + postid).on( 'keypress', 'input[type="text"]', function(e) {

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var k = e.keyCode;

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// Key codes 37 through 40 are the arrow keys.

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if ( 36 < k && k < 41 ) {

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$(this).trigger( 'blur' );

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}

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// The key code 13 is the Enter key.

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if ( 13 === k ) {

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e.preventDefault();

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e.stopPropagation();

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return false;

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}

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});

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$( document ).on( 'image-editor-ui-ready', this.focusManager );

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},

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/**

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* Calculate the image size and save it to memory.

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*

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* @since 6.7.0

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*

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* @memberof imageEdit

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*

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* @param {number} postid The post ID.

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*

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* @return {void}

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*/

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calculateImgSize: function( postid ) {

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var t = this,

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x = t.intval( $( '#imgedit-x-' + postid ).val() ),

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y = t.intval( $( '#imgedit-y-' + postid ).val() );

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t.hold.w = t.hold.ow = x;

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t.hold.h = t.hold.oh = y;

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t.hold.xy_ratio = x / y;

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t.hold.sizer = parseFloat( $( '#imgedit-sizer-' + postid ).val() );

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t.currentCropSelection = null;

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},

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/**

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* Toggles the wait/load icon in the editor.

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*

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* @since 2.9.0

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* @since 5.5.0 Added the triggerUIReady parameter.

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*

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* @memberof imageEdit

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*

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* @param {number} postid The post ID.

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* @param {number} toggle Is 0 or 1, fades the icon in when 1 and out when 0.

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* @param {boolean} triggerUIReady Whether to trigger a custom event when the UI is ready. Default false.

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*

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* @return {void}

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*/

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toggleEditor: function( postid, toggle, triggerUIReady ) {

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var wait = $('#imgedit-wait-' + postid);

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if ( toggle ) {

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wait.fadeIn( 'fast' );

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} else {

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wait.fadeOut( 'fast', function() {

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if ( triggerUIReady ) {

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$( document ).trigger( 'image-editor-ui-ready' );

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}

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} );

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}

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},

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/**

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* Shows or hides image menu popup.

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*

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* @since 6.3.0

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*

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* @memberof imageEdit

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*

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* @param {HTMLElement} el The activated control element.

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*

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* @return {boolean} Always returns false.

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*/

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togglePopup : function(el) {

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var $el = $( el );

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var $targetEl = $( el ).attr( 'aria-controls' );

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var $target = $( '#' + $targetEl );

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$el

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.attr( 'aria-expanded', 'false' === $el.attr( 'aria-expanded' ) ? 'true' : 'false' );

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// Open menu and set z-index to appear above image crop area if it is enabled.

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$target

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.toggleClass( 'imgedit-popup-menu-open' ).slideToggle( 'fast' ).css( { 'z-index' : 200000 } );

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// Move focus to first item in menu when opening menu.

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if ( 'true' === $el.attr( 'aria-expanded' ) ) {

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$target.find( 'button' ).first().trigger( 'focus' );

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}

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return false;

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},

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/**

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* Observes whether the popup should remain open based on focus position.

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*

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* @since 6.4.0

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*

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* @memberof imageEdit

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*

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* @param {HTMLElement} el The activated control element.

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*

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* @return {boolean} Always returns false.

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*/

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monitorPopup : function() {

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var $parent = document.querySelector( '.imgedit-rotate-menu-container' );

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var $toggle = document.querySelector( '.imgedit-rotate-menu-container .imgedit-rotate' );

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setTimeout( function() {

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var $focused = document.activeElement;

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var $contains = $parent.contains( $focused );

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// If $focused is defined and not inside the menu container, close the popup.

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if ( $focused && ! $contains ) {

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if ( 'true' === $toggle.getAttribute( 'aria-expanded' ) ) {

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imageEdit.togglePopup( $toggle );

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}

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}

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}, 100 );

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return false;

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},

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/**

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* Navigate popup menu by arrow keys.

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*

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* @since 6.3.0

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* @since 6.7.0 Added the event parameter.

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*

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* @memberof imageEdit

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*

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* @param {Event} event The key or click event.

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* @param {HTMLElement} el The current element.

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*

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* @return {boolean} Always returns false.

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*/

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browsePopup : function(event, el) {

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var $el = $( el );

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var $collection = $( el ).parent( '.imgedit-popup-menu' ).find( 'button' );

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var $index = $collection.index( $el );

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var $prev = $index - 1;

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var $next = $index + 1;

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var $last = $collection.length;

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if ( $prev < 0 ) {

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$prev = $last - 1;

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}

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if ( $next === $last ) {

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$next = 0;

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}

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var target = false;

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if ( event.keyCode === 40 ) {

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target = $collection.get( $next );

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} else if ( event.keyCode === 38 ) {

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target = $collection.get( $prev );

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}

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if ( target ) {

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target.focus();

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event.preventDefault();

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}

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return false;

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},

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/**

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* Close popup menu and reset focus on feature activation.

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*

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* @since 6.3.0

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*

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* @memberof imageEdit

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*

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* @param {HTMLElement} el The current element.

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*

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* @return {boolean} Always returns false.

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*/

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closePopup : function(el) {

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var $parent = $(el).parent( '.imgedit-popup-menu' );

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var $controlledID = $parent.attr( 'id' );

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var $target = $( 'button[aria-controls="' + $controlledID + '"]' );

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$target

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.attr( 'aria-expanded', 'false' ).trigger( 'focus' );

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$parent

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.toggleClass( 'imgedit-popup-menu-open' ).slideToggle( 'fast' );

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return false;

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},

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/**

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* Shows or hides the image edit help box.

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*

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* @since 2.9.0

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*

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* @memberof imageEdit

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*

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* @param {HTMLElement} el The element to create the help window in.

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*

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* @return {boolean} Always returns false.

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*/

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toggleHelp : function(el) {

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var $el = $( el );

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$el

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.attr( 'aria-expanded', 'false' === $el.attr( 'aria-expanded' ) ? 'true' : 'false' )

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.parents( '.imgedit-group-top' ).toggleClass( 'imgedit-help-toggled' ).find( '.imgedit-help' ).slideToggle( 'fast' );

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return false;

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},

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/**

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* Shows or hides image edit input fields when enabled.

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*

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* @since 6.3.0

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*

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* @memberof imageEdit

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*

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* @param {HTMLElement} el The element to trigger the edit panel.

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*

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* @return {boolean} Always returns false.

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*/

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toggleControls : function(el) {

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var $el = $( el );

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var $target = $( '#' + $el.attr( 'aria-controls' ) );

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$el

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.attr( 'aria-expanded', 'false' === $el.attr( 'aria-expanded' ) ? 'true' : 'false' );

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$target

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.parent( '.imgedit-group' ).toggleClass( 'imgedit-panel-active' );

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return false;

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},

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[398] Fix | Delete

/**

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* Gets the value from the image edit target.

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*

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* The image edit target contains the image sizes where the (possible) changes

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* have to be applied to.

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*

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* @since 2.9.0

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*

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* @memberof imageEdit

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*

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* @param {number} postid The post ID.

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*

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* @return {string} The value from the imagedit-save-target input field when available,

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* 'full' when not selected, or 'all' if it doesn't exist.

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*/

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getTarget : function( postid ) {

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var element = $( '#imgedit-save-target-' + postid );

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if ( element.length ) {

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return element.find( 'input[name="imgedit-target-' + postid + '"]:checked' ).val() || 'full';

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}

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return 'all';

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},

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/**

[424] Fix | Delete

* Recalculates the height or width and keeps the original aspect ratio.

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*

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* If the original image size is exceeded a red exclamation mark is shown.

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*

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* @since 2.9.0

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*

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* @memberof imageEdit

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*

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* @param {number} postid The current post ID.

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* @param {number} x Is 0 when it applies the y-axis

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* and 1 when applicable for the x-axis.

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* @param {jQuery} el Element.

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*

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* @return {void}

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*/

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scaleChanged : function( postid, x, el ) {

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var w = $('#imgedit-scale-width-' + postid), h = $('#imgedit-scale-height-' + postid),

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warn = $('#imgedit-scale-warn-' + postid), w1 = '', h1 = '',

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scaleBtn = $('#imgedit-scale-button');

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if ( false === this.validateNumeric( el ) ) {

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return;

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}

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if ( x ) {

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h1 = ( w.val() !== '' ) ? Math.round( w.val() / this.hold.xy_ratio ) : '';

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h.val( h1 );

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} else {

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w1 = ( h.val() !== '' ) ? Math.round( h.val() * this.hold.xy_ratio ) : '';

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w.val( w1 );

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}

[455] Fix | Delete

[456] Fix | Delete

if ( ( h1 && h1 > this.hold.oh ) || ( w1 && w1 > this.hold.ow ) ) {

[457] Fix | Delete

warn.css('visibility', 'visible');

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scaleBtn.prop('disabled', true);

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} else {

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warn.css('visibility', 'hidden');

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scaleBtn.prop('disabled', false);

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}

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},

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[465] Fix | Delete

/**

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* Gets the selected aspect ratio.

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*

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* @since 2.9.0

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*

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* @memberof imageEdit

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*

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* @param {number} postid The post ID.

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*

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* @return {string} The aspect ratio.

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*/

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getSelRatio : function(postid) {

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var x = this.hold.w, y = this.hold.h,

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X = this.intval( $('#imgedit-crop-width-' + postid).val() ),

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Y = this.intval( $('#imgedit-crop-height-' + postid).val() );

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if ( X && Y ) {

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return X + ':' + Y;

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}

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if ( x && y ) {

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return x + ':' + y;

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}

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return '1:1';

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},

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[492] Fix | Delete

/**

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* Removes the last action from the image edit history.

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* The history consist of (edit) actions performed on the image.

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*

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* @since 2.9.0

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*

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* @memberof imageEdit

[499] Fix | Delete