/**
 * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

CKEDITOR.plugins.add( 'format', {
	requires: 'richcombo',
	// 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
	init: function( editor ) {
		if ( editor.blockless )
			return;

		var config = editor.config,
			lang = editor.lang.format;

		// Gets the list of tags from the settings.
		var tags = config.format_tags.split( ';' );

		// Create style objects for all defined styles.
		var styles = {},
			stylesCount = 0,
			allowedContent = [];
		for ( var i = 0; i < tags.length; i++ ) {
			var tag = tags[ i ];
			var style = new CKEDITOR.style( config[ 'format_' + tag ] );
			if ( !editor.filter.customConfig || editor.filter.check( style ) ) {
				stylesCount++;
				styles[ tag ] = style;
				styles[ tag ]._.enterMode = editor.config.enterMode;
				allowedContent.push( style );
			}
		}

		// Hide entire combo when all formats are rejected.
		if ( stylesCount === 0 )
			return;

		editor.ui.addRichCombo( 'Format', {
			label: lang.label,
			title: lang.panelTitle,
			toolbar: 'styles,20',
			allowedContent: allowedContent,

			panel: {
				css: [ CKEDITOR.skin.getPath( 'editor' ) ].concat( config.contentsCss ),
				multiSelect: false,
				attributes: { 'aria-label': lang.panelTitle }
			},

			init: function() {
				this.startGroup( lang.panelTitle );

				for ( var tag in styles ) {
					var label = lang[ 'tag_' + tag ];

					// Add the tag entry to the panel list.
					this.add( tag, styles[ tag ].buildPreview( label ), label );
				}
			},

			onClick: function( value ) {
				editor.focus();
				editor.fire( 'saveSnapshot' );

				var style = styles[ value ],
					elementPath = editor.elementPath();

				// Always apply style, do not allow to toggle it by clicking on corresponding list item (#584).
				if ( !style.checkActive( elementPath, editor ) ) {
					editor.applyStyle( style );
				}

				// Save the undo snapshot after all changes are affected. (https://dev.ckeditor.com/ticket/4899)
				setTimeout( function() {
					editor.fire( 'saveSnapshot' );
				}, 0 );
			},

			onRender: function() {
				editor.on( 'selectionChange', function( ev ) {
					var currentTag = this.getValue(),
						elementPath = ev.data.path;

					this.refresh();

					for ( var tag in styles ) {
						if ( styles[ tag ].checkActive( elementPath, editor ) ) {
							if ( tag != currentTag )
								this.setValue( tag, editor.lang.format[ 'tag_' + tag ] );
							return;
						}
					}

					// If no styles match, just empty it.
					this.setValue( '' );

				}, this );
			},

			onOpen: function() {
				this.showAll();
				for ( var name in styles ) {
					var style = styles[ name ];

					// Check if that style is enabled in activeFilter.
					if ( !editor.activeFilter.check( style ) )
						this.hideItem( name );

				}
			},

			refresh: function() {
				var elementPath = editor.elementPath();

				if ( !elementPath )
						return;

				// Check if element path contains 'p' element.
				if ( !elementPath.isContextFor( 'p' ) ) {
					this.setState( CKEDITOR.TRISTATE_DISABLED );
					return;
				}

				// Check if there is any available style.
				for ( var name in styles ) {
					if ( editor.activeFilter.check( styles[ name ] ) )
						return;
				}
				this.setState( CKEDITOR.TRISTATE_DISABLED );
			}
		} );
	}
} );

/**
 * A list of semicolon-separated style names (by default: tags) representing
 * the style definition for each entry to be displayed in the Format drop-down list
 * in the toolbar. Each entry must have a corresponding configuration in a
 * setting named `'format_(tagName)'`. For example, the `'p'` entry has its
 * definition taken from [config.format_p](#!/api/CKEDITOR.config-cfg-format_p).
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_tags = 'p;h2;h3;pre';
 *
 * @cfg {String} [format_tags='p;h1;h2;h3;h4;h5;h6;pre;address;div']
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_tags = 'p;h1;h2;h3;h4;h5;h6;pre;address;div';

/**
 * The style definition to be used to apply the `Normal` format.
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_p = { element: 'p', attributes: { 'class': 'normalPara' } };
 *
 * @cfg {Object} [format_p={ element: 'p' }]
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_p = { element: 'p' };

/**
 * The style definition to be used to apply the `Normal (DIV)` format.
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_div = { element: 'div', attributes: { 'class': 'normalDiv' } };
 *
 * @cfg {Object} [format_div={ element: 'div' }]
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_div = { element: 'div' };

/**
 * The style definition to be used to apply the `Formatted` format.
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_pre = { element: 'pre', attributes: { 'class': 'code' } };
 *
 * @cfg {Object} [format_pre={ element: 'pre' }]
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_pre = { element: 'pre' };

/**
 * The style definition to be used to apply the `Address` format.
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_address = { element: 'address', attributes: { 'class': 'styledAddress' } };
 *
 * @cfg {Object} [format_address={ element: 'address' }]
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_address = { element: 'address' };

/**
 * The style definition to be used to apply the `Heading 1` format.
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_h1 = { element: 'h1', attributes: { 'class': 'contentTitle1' } };
 *
 * @cfg {Object} [format_h1={ element: 'h1' }]
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_h1 = { element: 'h1' };

/**
 * The style definition to be used to apply the `Heading 2` format.
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_h2 = { element: 'h2', attributes: { 'class': 'contentTitle2' } };
 *
 * @cfg {Object} [format_h2={ element: 'h2' }]
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_h2 = { element: 'h2' };

/**
 * The style definition to be used to apply the `Heading 3` format.
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_h3 = { element: 'h3', attributes: { 'class': 'contentTitle3' } };
 *
 * @cfg {Object} [format_h3={ element: 'h3' }]
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_h3 = { element: 'h3' };

/**
 * The style definition to be used to apply the `Heading 4` format.
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_h4 = { element: 'h4', attributes: { 'class': 'contentTitle4' } };
 *
 * @cfg {Object} [format_h4={ element: 'h4' }]
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_h4 = { element: 'h4' };

/**
 * The style definition to be used to apply the `Heading 5` format.
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_h5 = { element: 'h5', attributes: { 'class': 'contentTitle5' } };
 *
 * @cfg {Object} [format_h5={ element: 'h5' }]
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_h5 = { element: 'h5' };

/**
 * The style definition to be used to apply the `Heading 6` format.
 *
 * Read more in the {@glink features/format documentation}
 * and see the {@glink examples/format example}.
 *
 *		config.format_h6 = { element: 'h6', attributes: { 'class': 'contentTitle6' } };
 *
 * @cfg {Object} [format_h6={ element: 'h6' }]
 * @member CKEDITOR.config
 */
CKEDITOR.config.format_h6 = { element: 'h6' };
