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﻿/**
 * @license Copyright (c) 2003-2022, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

/**
 * @fileOverview The "colorbutton" plugin that makes it possible to assign
 *               text and background colors to editor contents.
 *
 */

( function() {
	var ColorBox,
		ColorHistoryRow,
		ColorHistory;

	CKEDITOR.plugins.add( 'colorbutton', {
		requires: 'panelbutton,floatpanel',
		// jscs:disable maximumLineLength
		lang: 'af,ar,az,bg,bn,bs,ca,cs,cy,da,de,de-ch,el,en,en-au,en-ca,en-gb,eo,es,es-mx,et,eu,fa,fi,fo,fr,fr-ca,gl,gu,he,hi,hr,hu,id,is,it,ja,ka,km,ko,ku,lt,lv,mk,mn,ms,nb,nl,no,oc,pl,pt,pt-br,ro,ru,si,sk,sl,sq,sr,sr-latn,sv,th,tr,tt,ug,uk,vi,zh,zh-cn', // %REMOVE_LINE_CORE%
		// jscs:enable maximumLineLength
		icons: 'bgcolor,textcolor', // %REMOVE_LINE_CORE%
		hidpi: true, // %REMOVE_LINE_CORE%
		init: function( editor ) {
			var config = editor.config,
				lang = editor.lang.colorbutton;

			if ( !CKEDITOR.env.hc ) {
				addButton( {
					name: 'TextColor',
					type: 'fore',
					commandName: 'textColor',
					title: lang.textColorTitle,
					order: 10,
					contentTransformations: [
						[
							{
								element: 'font',
								check: 'span{color}',
								left: function( element ) {
									return !!element.attributes.color;
								},
								right: function( element ) {
									element.name = 'span';

									element.attributes.color && ( element.styles.color = element.attributes.color );
									delete element.attributes.color;
								}
							}
						]
					]
				} );

				var contentTransformations,
					normalizeBackground = editor.config.colorButton_normalizeBackground;

				if ( normalizeBackground === undefined || normalizeBackground ) {
					// If background contains only color, then we want to convert it into background-color so that it's
					// correctly picked by colorbutton plugin.
					contentTransformations = [
						[
							{
								// Transform span that specify background with color only to background-color.
								element: 'span',
								left: function( element ) {
									var tools = CKEDITOR.tools;
									if ( element.name != 'span' || !element.styles || !element.styles.background ) {
										return false;
									}

									var background = tools.style.parse.background( element.styles.background );

									// We return true only if background specifies **only** color property, and there's only one background directive.
									return background.color && tools.object.keys( background ).length === 1;
								},
								right: function( element ) {
									var style = new CKEDITOR.style( editor.config.colorButton_backStyle, {
											color: element.styles.background
										} ),
										definition = style.getDefinition();

									// Align the output object with the template used in config.
									element.name = definition.element;
									element.styles = definition.styles;
									element.attributes = definition.attributes || {};

									return element;
								}
							}
						]
					];
				}

				addButton( {
					name: 'BGColor',
					type: 'back',
					commandName: 'bgColor',
					title: lang.bgColorTitle,
					order: 20,
					contentTransformations: contentTransformations
				} );
			}

			function addButton( options ) {
				var name = options.name,
					type = options.type,
					title = options.title,
					order = options.order,
					commandName = options.commandName,
					contentTransformations = options.contentTransformations || {},
					style = new CKEDITOR.style( config[ 'colorButton_' + type + 'Style' ] ),
					colorBoxId = CKEDITOR.tools.getNextId() + '_colorBox',
					colorData = { type: type },
					defaultColorStyle = new CKEDITOR.style( config[ 'colorButton_' + type + 'Style' ], { color: 'inherit' } ),
					clickFn = createClickFunction(),
					history = ColorHistory.getRowLimit( editor ) ? new ColorHistory( editor, type == 'back' ? 'background-color' : 'color', clickFn ) : undefined,
					panelBlock;

				editor.addCommand( commandName, {
					contextSensitive: true,
					exec: function( editor, data ) {
						if ( editor.readOnly ) {
							return;
						}

						var newStyle = data.newStyle;

						editor.removeStyle( defaultColorStyle );

						editor.focus();

						if ( newStyle ) {
							editor.applyStyle( newStyle );
						}

						editor.fire( 'saveSnapshot' );
					},

					refresh: function( editor, path ) {
						if ( !defaultColorStyle.checkApplicable( path, editor, editor.activeFilter ) ) {
							this.setState( CKEDITOR.TRISTATE_DISABLED );
						} else if ( defaultColorStyle.checkActive( path, editor ) ) {
							this.setState( CKEDITOR.TRISTATE_ON );
						} else {
							this.setState( CKEDITOR.TRISTATE_OFF );
						}
					}
				} );

				editor.ui.add( name, CKEDITOR.UI_PANELBUTTON, {
					label: title,
					title: title,
					command: commandName,
					editorFocus: 0,
					toolbar: 'colors,' + order,
					allowedContent: style,
					requiredContent: style,
					contentTransformations: contentTransformations,

					panel: {
						css: CKEDITOR.skin.getPath( 'editor' ),
						attributes: { role: 'listbox', 'aria-label': lang.panelTitle }
					},

					// Selects the color based on the first matching result from the given filter function.
					//
					// The filter function should accept a color iterated from the
					// {@link CKEDITOR.config#colorButton_colors} list as a parameter. If the color could not be found,
					// this method will fall back to the first color from the panel.
					//
					// @since 4.14.0
					// @private
					// @member CKEDITOR.ui.colorButton
					// @param {Function} callback The filter function which should return `true` if a matching color is found.
					// @param {String} callback.color The color compared by the filter function.
					select: function( callback ) {
						var colors = config.colorButton_colors.split( ',' ),
							color = CKEDITOR.tools.array.find( colors, callback );

						color = ColorBox.normalizeColor( color );

						selectColor( panelBlock, color );
						panelBlock._.markFirstDisplayed();
					},

					onBlock: function( panel, block ) {
						panelBlock = block;
						block.autoSize = true;
						block.element.addClass( 'cke_colorblock' );
						block.element.setHtml( renderColors( colorBoxId, clickFn, history ? history.getLength() : 0 ) );

						// The block should not have scrollbars (https://dev.ckeditor.com/ticket/5933, https://dev.ckeditor.com/ticket/6056)
						block.element.getDocument().getBody().setStyle( 'overflow', 'hidden' );

						// First render of panel have a scrollbar, but it shouldn't (#4247).
						block.element.getAscendant( { html: 1 } ).setStyle( 'overflow', 'hidden' );

						CKEDITOR.ui.fire( 'ready', this );

						var keys = block.keys,
							rtl = editor.lang.dir == 'rtl';

						keys[ rtl ? 37 : 39 ] = 'next'; // ARROW-RIGHT
						keys[ 40 ] = 'next'; // ARROW-DOWN
						keys[ 9 ] = 'next'; // TAB
						keys[ rtl ? 39 : 37 ] = 'prev'; // ARROW-LEFT
						keys[ 38 ] = 'prev'; // ARROW-UP
						keys[ CKEDITOR.SHIFT + 9 ] = 'prev'; // SHIFT + TAB
						keys[ 32 ] = 'click'; // SPACE

						if ( history ) {
							history.setContainer( block.element.findOne( '.cke_colorhistory' ) );
						}
					},

					// The automatic colorbox should represent the real color (https://dev.ckeditor.com/ticket/6010)
					onOpen: function() {
						var selection = editor.getSelection(),
							block = selection && selection.getStartElement(),
							path = editor.elementPath( block ),
							cssProperty = type == 'back' ? 'background-color' : 'color',
							automaticColor;

						if ( !path ) {
							return;
						}

						// Find the closest block element.
						block = path.block || path.blockLimit || editor.document.getBody();

						// The background color might be transparent. In that case, look up the color in the DOM tree.
						do {
							automaticColor = block && block.getComputedStyle( cssProperty ) || 'transparent';
						}
						while ( type == 'back' && automaticColor == 'transparent' && block && ( block = block.getParent() ) );

						// The box should never be transparent.
						if ( !automaticColor || automaticColor == 'transparent' ) {
							automaticColor = '#ffffff';
						}

						if ( config.colorButton_enableAutomatic ) {
							panelBlock.element.findOne( '#' + colorBoxId ).setStyle( 'background-color', automaticColor );
						}

						var range = selection && selection.getRanges()[ 0 ];

						if ( range ) {
							var walker = new CKEDITOR.dom.walker( range ),
								element = range.collapsed ? range.startContainer : walker.next(),
								finalColor = '',
								currentColor;

							while ( element ) {
								// (#2296)
								if ( element.type !== CKEDITOR.NODE_ELEMENT ) {
									element = element.getParent();
								}

								currentColor = ColorBox.normalizeColor( element.getComputedStyle( cssProperty ) );
								finalColor = finalColor || currentColor;

								if ( finalColor !== currentColor ) {
									finalColor = '';
									break;
								}

								element = walker.next();
							}

							if ( finalColor == 'transparent' ) {
								finalColor = '';
							}
							if ( type == 'fore' ) {
								colorData.automaticTextColor = '#' + ColorBox.normalizeColor( automaticColor );
							}
							colorData.selectionColor = finalColor ? '#' + finalColor : '';

							selectColor( panelBlock, finalColor );
						}

						return automaticColor;
					}
				} );

				function createColorStyleDefinition() {
					var colorStyleDefinition = editor.config[ 'colorButton_' + type + 'Style' ];

					colorStyleDefinition.childRule = type == 'back' ?
						function( element ) {
							// It's better to apply background color as the innermost style. (https://dev.ckeditor.com/ticket/3599)
							// Except for "unstylable elements". (https://dev.ckeditor.com/ticket/6103)
							return isUnstylable( element );
						} : function( element ) {
							// Fore color style must be applied inside links instead of around it. (https://dev.ckeditor.com/ticket/4772,https://dev.ckeditor.com/ticket/6908)
							return !( element.is( 'a' ) || element.getElementsByTag( 'a' ).count() ) || isUnstylable( element );
						};

					return colorStyleDefinition;
				}

				function createClickFunction() {
					return CKEDITOR.tools.addFunction( function addClickFn( color, colorName, colorbox ) {
						editor.focus();
						editor.fire( 'saveSnapshot' );

						if ( color == '?' ) {
							editor.getColorFromDialog( function( color ) {
								if ( color ) {
									setColor( color, colorName, history );
								}
							}, null, colorData );
						} else {
							setColor( color && '#' + color, colorName, history );
						}

						// The colors may be duplicated in both default palette and color history. If user reopens panel
						// after choosing color without changing selection, the box that was clicked last should be selected.
						// If selection changes in the meantime, color box from the default palette has the precedence.
						// See https://github.com/ckeditor/ckeditor4/pull/3784#pullrequestreview-378461341 for details.
						if ( !colorbox ) {
							return;
						}
						colorbox.setAttribute( 'cke_colorlast', true );
						editor.once( 'selectionChange', function() {
							colorbox.removeAttribute( 'cke_colorlast' );
						} );
					} );
				}

				function setColor( color, colorName, colorHistory ) {
					var colorStyleVars = {};

					if ( color ) {
						colorStyleVars.color = color;
					}
					if ( colorName ) {
						colorStyleVars.colorName = colorName;
					}

					var colorStyle = !CKEDITOR.tools.isEmpty( colorStyleVars ) && new CKEDITOR.style( createColorStyleDefinition(), colorStyleVars );

					editor.execCommand( commandName, { newStyle: colorStyle } );
					if ( color && colorHistory ) {
						colorHistory.addColor( color.substr( 1 ).toUpperCase() );
						renumberElements( panelBlock );
					}
				}

				function renumberElements( panel ) {
					var panelElements = panel.element.find( '[role=option]' ).toArray();

					for ( var i = 0; i < panelElements.length; i++ ) {
						panelElements[ i ].setAttributes( {
							'aria-posinset': i + 1,
							'aria-setsize': panelElements.length
						} );
					}
				}
			}

			function renderColors( colorBoxId, clickFn, historyLength ) {
				var output = [],
					colors = config.colorButton_colors.split( ',' ),
					// Tells if we should include "More Colors..." button.
					moreColorsEnabled = editor.plugins.colordialog && config.colorButton_enableMore,
					// aria-setsize and aria-posinset attributes are used to indicate size of options, because
					// screen readers doesn't play nice with table, based layouts (https://dev.ckeditor.com/ticket/12097).
					total = colors.length + historyLength + ( moreColorsEnabled ? 1 : 0 ),
					startingPosition = 1;

				if ( config.colorButton_enableAutomatic ) {
					total += 1;
					startingPosition += 1;
					generateAutomaticButtonHtml( output );
				}

				output.push( '<table role="presentation" cellspacing=0 cellpadding=0 width="100%"><tbody>' );

				// Render the color boxes.
				for ( var i = 0; i < colors.length; i++ ) {
					if ( ( i % editor.config.colorButton_colorsPerRow ) === 0 )
						output.push( '</tr><tr>' );

					var parts = colors[ i ].split( '/' ),
						colorName = parts[ 0 ],
						colorCode = parts[ 1 ] || colorName,
						colorLabel = parts[ 1 ] ? colorName : undefined,
						box = new ColorBox( editor, { color: colorCode, label: colorLabel }, clickFn );

					box.setPositionIndex( startingPosition + i, total );
					output.push( box.getHtml() );
				}

				if ( ColorHistory.getRowLimit( editor ) ) {
					ColorHistory.renderContainer( output, editor );
				}

				if ( moreColorsEnabled ) {
					generateMoreColorsButtonHtml( output );
				}

				output.push( '</tr></tbody></table>' );

				return output.join( '' );

				function generateAutomaticButtonHtml( output ) {
					output.push( '<a class="cke_colorauto" _cke_focus=1 hidefocus=true',
						' title="', lang.auto, '"',
						' draggable="false"',
						' ondragstart="return false;"', // Draggable attribute is buggy on Firefox.
						' onclick="CKEDITOR.tools.callFunction(', clickFn, ',null\);return false;"',
						' href="javascript:void(\'', lang.auto, '\')"',
						' role="option" aria-posinset="1" aria-setsize="', total, '">',
							'<table role="presentation" cellspacing=0 cellpadding=0 width="100%">',
								'<tr>',
									'<td colspan="', editor.config.colorButton_colorsPerRow, '" align="center">',
										'<span class="cke_colorbox" id="', colorBoxId, '"></span>', lang.auto,
									'</td>',
								'</tr>',
							'</table>',
						'</a>' );
				}

				function generateMoreColorsButtonHtml( output ) {
					output.push( '</tr>',
						'<tr>',
							'<td colspan="', editor.config.colorButton_colorsPerRow, '" align="center">',
								'<a class="cke_colormore" _cke_focus=1 hidefocus=true',
									' title="', lang.more, '"',
									' draggable="false"',
									' ondragstart="return false;"', // Draggable attribute is buggy on Firefox.
									' onclick="CKEDITOR.tools.callFunction(', clickFn, ',\'?\');return false;"',
									' href="javascript:void(\'', lang.more, '\')"', ' role="option" aria-posinset="', total,
									'" aria-setsize="', total, '">', lang.more,
								'</a>',
							'</td>' ); // </tr> is later in the code.
				}
			}

			function isUnstylable( ele ) {
				return ( ele.getAttribute( 'contentEditable' ) == 'false' ) || ele.getAttribute( 'data-nostyle' );
			}

			/*
			* Selects the specified color in the specified panel block.
			*
			* @private
			* @member CKEDITOR.plugins.colorbutton
			* @param {CKEDITOR.ui.panel.block} block
			* @param {String} color
			*/
			function selectColor( block, color ) {
				var items = block._.getItems(),
					selected = block.element.findOne( '[aria-selected]' ),
					lastColor = block.element.findOne( '[cke_colorlast]' );

				if ( selected ) {
					selected.removeAttribute( 'aria-selected' );
				}

				if ( lastColor ) {
					lastColor.setAttribute( 'aria-selected', true );
					return;
				}

				for ( var i = 0; i < items.count(); i++ ) {
					var item = items.getItem( i );

					if ( color && color == ColorBox.normalizeColor( item.getAttribute( 'data-value' ) ) ) {
						item.setAttribute( 'aria-selected', true );
						return;
					}
				}
			}
		}
	} );
	ColorBox = CKEDITOR.tools.createClass( {
		$: function( editor, colorData, clickFn ) {
			this.$ = new CKEDITOR.dom.element( 'td' );

			this.color = CKEDITOR.tools._isValidColorFormat( colorData.color ) ? colorData.color : '';
			this.clickFn = clickFn;
			this.label = colorData.label || ColorBox.colorNames( editor )[ this.color ] || this.color;

			this.setHtml();
		},

		statics: {
			colorNames: function( editor ) {
				return editor.lang.colorbutton.colors;
			},

			/*
			 * Converts a CSS color value to an easily comparable form.
			 *
			 * The function supports most of the color formats:
			 *
			 * * named colors (e.g. `yellow`),
			 * * hex colors (e.g. `#FF0000` or `#F00`),
			 * * RGB/RGBA colors (e.g. `rgb( 255, 0, 10)` or `rgba( 100, 20, 50, .5 )`),
			 * * HSL/HSLA colors (e.g. `hsl( 100, 50%, 20%)` or `hsla( 100, 50%, 20%, 10%)`).
			 *
			 * @private
			 * @param {String} color
			 * @returns {String} Returns color in hex format, but without the hash at the beginning, e.g. `ff0000` for red.
			 */
			normalizeColor: function( color ) {
				var alphaRegex = /^(rgb|hsl)a\(/g,
					transparentRegex = /^rgba\((\s*0\s*,?){4}\)$/g,
					isAlphaColor = alphaRegex.test( color ),
					// Browsers tend to represent transparent color as rgba(0, 0, 0, 0), so we need to filter out this value.
					isTransparentColor = transparentRegex.test( color ),
					colorInstance;

				// For colors with alpha channel we need to use CKEDITOR.tools.color normalization (#4351).
				if ( isAlphaColor && !isTransparentColor ) {
					colorInstance = new CKEDITOR.tools.color( color );

					return CKEDITOR.tools.normalizeHex( colorInstance.getHex() || '' ).replace( /#/g, '' );
				}

				// Replace 3-character hexadecimal notation with a 6-character hexadecimal notation (#1008).
				return CKEDITOR.tools.normalizeHex( '#' + CKEDITOR.tools.convertRgbToHex( color || '' ) ).replace( /#/g, '' );
			}
		},

		proto: {
			getElement: function() {
				return this.$;
			},

			getHtml: function() {
				return this.getElement().getOuterHtml();
			},

			setHtml: function() {
				this.getElement().setHtml( '<a class="cke_colorbox" _cke_focus=1 hidefocus=true' +
						' title="' + this.label + '"' +
						' draggable="false"' +
						' ondragstart="return false;"' + // Draggable attribute is buggy on Firefox.
						' onclick="CKEDITOR.tools.callFunction(' + this.clickFn + ',\'' + this.color + '\',\'' + this.label +  '\', this);' +
						' return false;"' +
						' href="javascript:void(\'' + this.color + '\')"' +
						' data-value="' + this.color + '"' +
						' role="option">' +
						'<span class="cke_colorbox" style="background-color:#' + this.color + '"></span>' +
					'</a>' );
			},

			setPositionIndex: function( posinset, setsize ) {
				this.getElement().getChild( 0 ).setAttributes( {
					'aria-posinset': posinset,
					'aria-setsize': setsize
				} );
			}
		}
	} );

	ColorHistoryRow = CKEDITOR.tools.createClass( {
		$: function() {
			this.$ = new CKEDITOR.dom.element( 'tr' );
			this.$.addClass( 'cke_colorhistory_row' );
			this.boxes = [];
		},

		proto: {
			getElement: function() {
				return this.$;
			},

			removeLastColor: function() {
				this.getElement().getLast().remove();
				return this.boxes.pop();
			},

			addNewColor: function( colorBox ) {
				this.boxes.unshift( colorBox );
				this.getElement().append( colorBox.getElement(), true );
			},

			extractColorBox: function( colorCode ) {
				var index = CKEDITOR.tools.getIndex( this.boxes, function( box ) {
					return box.color === colorCode;
				} );

				if ( index < 0 ) {
					return null;
				}

				this.boxes[ index ].getElement().remove();
				return this.boxes.splice( index, 1 )[ 0 ];
			}
		}
	} );

	ColorHistory = CKEDITOR.tools.createClass( {
		$: function( editor, cssProperty, clickFn ) {
			this.editor = editor;
			this.cssProperty = cssProperty;
			this.clickFn = clickFn;

			this.rows = [];
			this._.addNewRow();

			if ( this.editor.config.colorButton_renderContentColors ) {
				// It can't be done right away - we have to wait till editable is set up.
				this.editor.once( 'instanceReady', function() {
					this.renderContentColors();
				}, this );
			}
		},

		statics: {
			renderContainer: function( output, editor ) {
				output.push( '</tbody><tbody class="cke_colorhistory" style="display:none;">',
					'<tr>',
						'<td colspan="', editor.config.colorButton_colorsPerRow, '" align="center">',
							'<span><hr></span>',
						'</td>',
					'</tr>',
				'</tbody><tbody>' );
			},

			getRowLimit: function( editor ) {
				return editor.config.colorButton_historyRowLimit;
			},

			getCapacity: function( editor ) {
				return ColorHistory.getRowLimit( editor ) * editor.config.colorButton_colorsPerRow;
			},

			colorList: CKEDITOR.tools.style.parse._colors
		},

		_: {
			countColors: function() {
				var spans = CKEDITOR.tools.getStyledSpans( this.cssProperty, this.editor.editable() ),
					colorOccurrences = CKEDITOR.tools.array.reduce( spans, function( occurrences, span ) {
						var colorCode = this._.getHexCode( span, this.cssProperty, ColorHistory.colorList );

						occurrences[ colorCode ] = occurrences[ colorCode ] || 0;
						occurrences[ colorCode ] += 1;

						return occurrences;
					}, {}, this );

				return colorOccurrences;
			},

			getHexCode: function( span, cssProperty, list ) {
				var color = span.getStyle( cssProperty );

				return color in list ? list[ color ].substr( 1 ) : ColorBox.normalizeColor( span.getComputedStyle( cssProperty ) ).toUpperCase();
			},

			sortByOccurrencesAscending: function( objectToParse, targetKeyName ) {
				var result = [];

				for ( var key in objectToParse ) {
					var color = {};

					color[ targetKeyName ] = key;
					color.frequency = objectToParse[ key ];

					result.push( color );
				}

				result.sort( function( a, b ) {
					return b.frequency - a.frequency;
				} );

				this._.trimToCapacity( result );

				return result.reverse();
			},

			trimToCapacity: function( array ) {
				array.splice( ColorHistory.getCapacity( this.editor ) );
			},

			addColors: function( colorData ) {
				CKEDITOR.tools.array.forEach( colorData, function( color ) {
					this.addColor( color.colorCode );
				}, this );
			},

			extractColorBox: function( colorCode ) {
				for ( var i = 0; i < this.rows.length; i++ ) {
					var box = this.rows[ i ].extractColorBox( colorCode );

					if ( box ) {
						return box;
					}
				}

				return null;
			},

			moveToBeginning: function( colorBox ) {
				this.rows[ 0 ].addNewColor( colorBox );
			},

			createAtBeginning: function( colorCode ) {
				this._.moveToBeginning( new ColorBox( this.editor, { color: colorCode }, this.clickFn ) );
			},

			addNewRow: function() {
				this.rows.push( new ColorHistoryRow() );

				if ( this.container ) {
					this.container.append( this.rows[ this.rows.length - 1 ].getElement() );
				}
			},

			alignRows: function() {
				for ( var rowIndex = 0; rowIndex < ColorHistory.getRowLimit( this.editor ); rowIndex++ ) {
					if ( this.rows[ rowIndex ].boxes.length <= this.editor.config.colorButton_colorsPerRow ) {
						return;
					} else if ( this.rows[ rowIndex + 1 ] ) {
						this._.moveLastBoxToNextRow( rowIndex );
					} else if ( rowIndex < ColorHistory.getRowLimit( this.editor ) - 1 ) {
						this._.addNewRow();
						this._.moveLastBoxToNextRow( rowIndex );
					} else {
						this.rows[ rowIndex ].removeLastColor();
					}
				}
			},

			moveLastBoxToNextRow: function( index ) {
				this.rows[ index + 1 ].addNewColor( this.rows[ index ].removeLastColor() );
			},

			refreshPositions: function() {
				var total = this._.countPanelElements(),
					position = this._.calculateFirstPosition( total );

				CKEDITOR.tools.array.forEach( this.rows, function( row ) {
					CKEDITOR.tools.array.forEach( row.boxes, function( colorBox ) {
						colorBox.setPositionIndex( position, total );
						position += 1;
					} );
				} );
			},

			countPanelElements: function() {
				var total = this.editor.config.colorButton_colors.split( ',' ).length + this.getLength();

				if ( this.editor.plugins.colordialog && this.editor.config.colorButton_enableMore ) {
					total += 1;
				}

				if ( this.editor.config.colorButton_enableAutomatic ) {
					total += 1;
				}

				return total;
			},

			calculateFirstPosition: function( total ) {
				if ( this.editor.plugins.colordialog && this.editor.config.colorButton_enableMore ) {
					return total - this.getLength();
				} else {
					return total - this.getLength() + 1;
				}
			},

			attachRows: function() {
				CKEDITOR.tools.array.forEach( this.rows, function( row ) {
					this.container.append( row.getElement() );
				}, this );
			}
		},

		proto: {
			setContainer: function( container ) {
				this.container = container;
				this._.attachRows();

				if ( this.getLength() ) {
					this.show();
				}
			},

			show: function() {
				if ( this.container ) {
					this.container.show();
				}
			},

			renderContentColors: function() {
				var colorOccurrences = this._.countColors();

				if ( CKEDITOR.tools.isEmpty( colorOccurrences ) ) {
					return;
				}

				var colorData = this._.sortByOccurrencesAscending( colorOccurrences, 'colorCode' );

				this._.addColors( colorData );
				this._.refreshPositions();
			},

			addColor: function( colorCode ) {
				var existingBox = this._.extractColorBox( colorCode );

				if ( this.container && !this.container.isVisible() ) {
					this.show();
				}

				if ( existingBox ) {
					this._.moveToBeginning( existingBox );
				} else {
					this._.createAtBeginning( colorCode );
				}

				this._.alignRows();
			},

			getLength: function() {
				return CKEDITOR.tools.array.reduce( this.rows, function( total, row ) {
					return total += row.boxes.length;
				}, 0 );
			}
		}
	} );
} )();

/**
 * Whether to enable the **More Colors** button in the color selectors.
 *
 * Read more in the {@glink features/colorbutton documentation}
 * and see the {@glink examples/colorbutton example}.
 *
 *		config.colorButton_enableMore = false;
 *
 * @cfg {Boolean} [colorButton_enableMore=true]
 * @member CKEDITOR.config
 */
CKEDITOR.config.colorButton_enableMore = true;

/**
 * Defines the colors to be displayed in the color selectors. This is a string
 * containing hexadecimal notation for HTML colors, without the `'#'` prefix.
 *
 * **Since 3.3:** A color name may optionally be defined by prefixing the entries with
 * a name and the slash character. For example, `'FontColor1/FF9900'` will be
 * displayed as the color `#FF9900` in the selector, but will be output as `'FontColor1'`.
 * **This behaviour was altered in version 4.12.0.**
 *
 * **Since 4.6.2:** The default color palette has changed. It contains fewer colors in more
 * pastel shades than the previous one.
 *
 * **Since 4.12.0:** Defining colors with names works in a different way. Colors names can be defined
 * by `colorName/colorCode`. The color name is only used in the tooltip. The output will now use the color code.
 * For example, `FontColor/FF9900` will be displayed as the color `#FF9900` in the selector, and will
 * be output as `#FF9900`.
 *
 * Read more in the {@glink features/colorbutton documentation}
 * and see the {@glink examples/colorbutton example}.
 *
 *		// Brazil colors only.
 *		config.colorButton_colors = '00923E,F8C100,28166F';
 *
 *		config.colorButton_colors = 'FontColor1/FF9900,FontColor2/0066CC,FontColor3/F00';
 *
 *		// CKEditor color palette available before version 4.6.2.
 *		config.colorButton_colors =
 *			'000,800000,8B4513,2F4F4F,008080,000080,4B0082,696969,' +
 *			'B22222,A52A2A,DAA520,006400,40E0D0,0000CD,800080,808080,' +
 *			'F00,FF8C00,FFD700,008000,0FF,00F,EE82EE,A9A9A9,' +
 *			'FFA07A,FFA500,FFFF00,00FF00,AFEEEE,ADD8E6,DDA0DD,D3D3D3,' +
 *			'FFF0F5,FAEBD7,FFFFE0,F0FFF0,F0FFFF,F0F8FF,E6E6FA,FFF';
 *
 * @cfg {String} [colorButton_colors]
 * @member CKEDITOR.config
 */
CKEDITOR.config.colorButton_colors = '1ABC9C,2ECC71,3498DB,9B59B6,4E5F70,F1C40F,' +
	'16A085,27AE60,2980B9,8E44AD,2C3E50,F39C12,' +
	'E67E22,E74C3C,ECF0F1,95A5A6,DDD,FFF,' +
	'D35400,C0392B,BDC3C7,7F8C8D,999,000';

/**
 * Stores the style definition that applies the text foreground color.
 *
 * **Note:** Advanced Content Filter (ACF) is not updated automatically by a custom style definition.
 * You may need to add additional ACF rules, so the customized style element is not removed.
 * Learn more how to configure ACF with {@glink guide/dev_advanced_content_filter Advanced Content Filter guide}.
 *
 * Read more in the {@glink features/colorbutton documentation}
 * and see the {@glink examples/colorbutton example}.
 *
 *		// This is actually the default value.
 *		config.colorButton_foreStyle = {
 *			element: 'span',
 *			styles: { color: '#(color)' }
 *		};
 *
 * **Since 4.15.0:** Added `colorName` property, which can be used instead of a `color`
 * property to customize foreground style. For example to add custom class:
 *
 *		config.colorButton_foreStyle = {
 *			element: 'span',
 *			attributes: { 'class': '#(colorName)' }
 *		};
 *
 * @cfg [colorButton_foreStyle]
 * @member CKEDITOR.config
 */
CKEDITOR.config.colorButton_foreStyle = {
	element: 'span',
	styles: { 'color': '#(color)' },
	overrides: [ {
		element: 'font', attributes: { 'color': null }
	} ]
};

/**
 * Stores the style definition that applies the text background color.
 *
 * **Note:** Advanced Content Filter (ACF) is not updated automatically by a custom style definition.
 * You may need to add additional ACF rules, so the customized style element is not removed.
 * Learn more how to configure ACF with {@glink guide/dev_advanced_content_filter Advanced Content Filter guide}.
 *
 * Read more in the {@glink features/colorbutton documentation}
 * and see the {@glink examples/colorbutton example}.
 *
 *		// This is actually the default value.
 *		config.colorButton_backStyle = {
 *			element: 'span',
 *			styles: { 'background-color': '#(color)' }
 *		};
 *
 * **Since 4.15.0:** Added `colorName` property, which can be used instead of a `color`
 * property to customize background style. For example to add custom class:
 *
 *		config.colorButton_backStyle = {
 *			element: 'span',
 *			attributes: { 'class': '#(colorName)' }
 *		};
 *
 * @cfg [colorButton_backStyle]
 * @member CKEDITOR.config
 */
CKEDITOR.config.colorButton_backStyle = {
	element: 'span',
	styles: { 'background-color': '#(color)' }
};

/**
 * Whether to enable the **Automatic** button in the color selectors.
 *
 * Read more in the {@glink features/colorbutton documentation}
 * and see the {@glink examples/colorbutton example}.
 *
 *		config.colorButton_enableAutomatic = false;
 *
 * @cfg {Boolean} [colorButton_enableAutomatic=true]
 * @member CKEDITOR.config
 */
CKEDITOR.config.colorButton_enableAutomatic = true;

/**
 * Defines how many colors will be shown per row in the color selectors.
 *
 * Read more in the {@glink features/colorbutton documentation}
 * and see the {@glink examples/colorbutton example}.
 *
 *		config.colorButton_colorsPerRow = 8;
 *
 * @since 4.6.2
 * @cfg {Number} [colorButton_colorsPerRow=6]
 * @member CKEDITOR.config
 */
CKEDITOR.config.colorButton_colorsPerRow = 6;

/**
 * Whether the plugin should convert `background` CSS properties with color only, to a `background-color` property,
 * allowing the [Color Button](https://ckeditor.com/cke4/addon/colorbutton) plugin to edit these styles.
 *
 *		config.colorButton_normalizeBackground = false;
 *
 * @since 4.6.1
 * @cfg {Boolean} [colorButton_normalizeBackground=true]
 * @member CKEDITOR.config
 */

/**
 * Defines how many color history rows can be created.
 *
 *		config.colorButton_historyRowLimit = 2;
 *
 * @since 4.15.0
 * @cfg {Number} [colorButton_historyRowLimit=1]
 * @member CKEDITOR.config
 */
CKEDITOR.config.colorButton_historyRowLimit = 1;

/**
 * Defines if color history should be initially filled by colors found in content.
 *
 *		config.colorButton_renderContentColors = false;
 *
 * @since 4.15.0
 * @cfg {Number} [colorButton_renderContentColors=true]
 * @member CKEDITOR.config
 */
CKEDITOR.config.colorButton_renderContentColors = true;
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