source: trunk/admin/inc/ckeditor/_source/plugins/pagebreak/plugin.js@ 428

/*
Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

/**
 * @file Horizontal Page Break
 */

// Register a plugin named "pagebreak".
CKEDITOR.plugins.add( 'pagebreak',
{
        init : function( editor )
        {
                // Register the command.
                editor.addCommand( 'pagebreak', CKEDITOR.plugins.pagebreakCmd );

                // Register the toolbar button.
                editor.ui.addButton( 'PageBreak',
                        {
                                label : editor.lang.pagebreak,
                                command : 'pagebreak'
                        });

                var cssStyles = [
                        '{' ,
                                'background: url(' + CKEDITOR.getUrl( this.path + 'images/pagebreak.gif' ) + ') no-repeat center center;' ,
                                'clear: both;' ,
                                'width:100%; _width:99.9%;' ,
                                'border-top: #999999 1px dotted;' ,
                                'border-bottom: #999999 1px dotted;' ,
                                'padding:0;' ,
                                'height: 5px;' ,
                                'cursor: default;' ,
                        '}'
                        ].join( '' ).replace(/;/g, ' !important;' );    // Increase specificity to override other styles, e.g. block outline.

                // Add the style that renders our placeholder.
                editor.addCss( 'div.cke_pagebreak' + cssStyles );

                // Opera needs help to select the page-break.
                CKEDITOR.env.opera && editor.on( 'contentDom', function()
                {
                        editor.document.on( 'click', function( evt )
                        {
                                var target = evt.data.getTarget();
                                if ( target.is( 'div' ) && target.hasClass( 'cke_pagebreak')  )
                                        editor.getSelection().selectElement( target );
                        });
                });
        },

        afterInit : function( editor )
        {
                var label = editor.lang.pagebreakAlt;

                // Register a filter to displaying placeholders after mode change.
                var dataProcessor = editor.dataProcessor,
                        dataFilter = dataProcessor && dataProcessor.dataFilter,
                        htmlFilter = dataProcessor && dataProcessor.htmlFilter;

                if ( htmlFilter )
                {
                        htmlFilter.addRules(
                        {
                                attributes : {
                                        'class' : function( value, element )
                                        {
                                                var className =  value.replace( 'cke_pagebreak', '' );
                                                if ( className != value )
                                                {
                                                        var span = CKEDITOR.htmlParser.fragment.fromHtml( '<span style="display: none;">&nbsp;</span>' );
                                                        element.children.length = 0;
                                                        element.add( span );
                                                        var attrs = element.attributes;
                                                        delete attrs[ 'aria-label' ];
                                                        delete attrs.contenteditable;
                                                        delete attrs.title;
                                                }
                                                return className;
                                        }
                                }
                        }, 5 );
                }

                if ( dataFilter )
                {
                        dataFilter.addRules(
                                {
                                        elements :
                                        {
                                                div : function( element )
                                                {
                                                        var attributes = element.attributes,
                                                                style = attributes && attributes.style,
                                                                child = style && element.children.length == 1 && element.children[ 0 ],
                                                                childStyle = child && ( child.name == 'span' ) && child.attributes.style;

                                                        if ( childStyle && ( /page-break-after\s*:\s*always/i ).test( style ) && ( /display\s*:\s*none/i ).test( childStyle ) )
                                                        {
                                                                attributes.contenteditable = "false";
                                                                attributes[ 'class' ] = "cke_pagebreak";
                                                                attributes[ 'data-cke-display-name' ] = "pagebreak";
                                                                attributes[ 'aria-label' ] = label;
                                                                attributes[ 'title' ] = label;

                                                                element.children.length = 0;
                                                        }
                                                }
                                        }
                                });
                }
        },

        requires : [ 'fakeobjects' ]
});

CKEDITOR.plugins.pagebreakCmd =
{
        exec : function( editor )
        {
                var label = editor.lang.pagebreakAlt;

                // Create read-only element that represents a print break.
                var pagebreak = CKEDITOR.dom.element.createFromHtml(
                        '<div style="' +
                        'page-break-after: always;"' +
                        'contenteditable="false" ' +
                        'title="'+ label + '" ' +
                        'aria-label="'+ label + '" ' +
                        'data-cke-display-name="pagebreak" ' +
                        'class="cke_pagebreak">' +
                        '</div>', editor.document );

                var ranges = editor.getSelection().getRanges( true );

                editor.fire( 'saveSnapshot' );

                for ( var range, i = ranges.length - 1 ; i >= 0; i-- )
                {
                        range = ranges[ i ];

                        if ( i < ranges.length -1 )
                                pagebreak = pagebreak.clone( true );

                        range.splitBlock( 'p' );
                        range.insertNode( pagebreak );
                        if ( i == ranges.length - 1 )
                        {
                                var next = pagebreak.getNext();
                                range.moveToPosition( pagebreak, CKEDITOR.POSITION_AFTER_END );

                                // If there's nothing or a non-editable block followed by, establish a new paragraph
                                // to make sure cursor is not trapped.
                                if ( !next || next.type == CKEDITOR.NODE_ELEMENT && !next.isEditable() )
                                        range.fixBlock( true, editor.config.enterMode == CKEDITOR.ENTER_DIV ? 'div' : 'p'  );

                                range.select();
                        }
                }

                editor.fire( 'saveSnapshot' );
        }
};