/**
 * @license Copyright (c) 2003-2018, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

CKEDITOR.dialog.add( 'button', function( editor ) {
	function commitAttributes( element ) {
		var val = this.getValue();
		if ( val ) {
			element.attributes[ this.id ] = val;
			if ( this.id == 'name' )
				element.attributes[ 'data-cke-saved-name' ] = val;
		} else {
			delete element.attributes[ this.id ];
			if ( this.id == 'name' )
				delete element.attributes[ 'data-cke-saved-name' ];
		}
	}

	return {
		title: editor.lang.forms.button.title,
		minWidth: 350,
		minHeight: 150,
		onShow: function() {
			delete this.button;
			var element = this.getParentEditor().getSelection().getSelectedElement();
			if ( element && element.is( 'input' ) ) {
				var type = element.getAttribute( 'type' );
				if ( type in { button: 1, reset: 1, submit: 1 } ) {
					this.button = element;
					this.setupContent( element );
				}
			}
		},
		onOk: function() {
			var editor = this.getParentEditor(),
				element = this.button,
				isInsertMode = !element;

			var fake = element ? CKEDITOR.htmlParser.fragment.fromHtml( element.getOuterHtml() ).children[ 0 ] : new CKEDITOR.htmlParser.element( 'input' );
			this.commitContent( fake );

			var writer = new CKEDITOR.htmlParser.basicWriter();
			fake.writeHtml( writer );
			var newElement = CKEDITOR.dom.element.createFromHtml( writer.getHtml(), editor.document );

			if ( isInsertMode )
				editor.insertElement( newElement );
			else {
				newElement.replace( element );
				editor.getSelection().selectElement( newElement );
			}
		},
		contents: [ {
			id: 'info',
			label: editor.lang.forms.button.title,
			title: editor.lang.forms.button.title,
			elements: [
				{
					id: 'name',
					type: 'text',
					bidi: true,
					label: editor.lang.common.name,
					'default': '',
					setup: function( element ) {
						this.setValue( element.data( 'cke-saved-name' ) || element.getAttribute( 'name' ) || '' );
					},
					commit: commitAttributes
				},
				{
					id: 'value',
					type: 'text',
					label: editor.lang.forms.button.text,
					accessKey: 'V',
					'default': '',
					setup: function( element ) {
						this.setValue( element.getAttribute( 'value' ) || '' );
					},
					commit: commitAttributes
				},
				{
					id: 'type',
					type: 'select',
					label: editor.lang.forms.button.type,
					'default': 'button',
					accessKey: 'T',
					items: [
						[ editor.lang.forms.button.typeBtn, 'button' ],
						[ editor.lang.forms.button.typeSbm, 'submit' ],
						[ editor.lang.forms.button.typeRst, 'reset' ]
					],
					setup: function( element ) {
						this.setValue( element.getAttribute( 'type' ) || '' );
					},
					commit: commitAttributes
				}
			]
		} ]
	};
} );