jquery.textSelection: Add ability to register custom implementation

[lhc/web/wiklou.git] / resources / src / jquery / jquery.textSelection.js

diff --git a/resources/src/jquery/jquery.textSelection.js b/resources/src/jquery/jquery.textSelection.js
index 0573f66..632769b 100644 (file)
--- a/resources/src/jquery/jquery.textSelection.js
+++ b/resources/src/jquery/jquery.textSelection.js
@@ -24,8 +24,9 @@
 
        $.fn.textSelection = function ( command, options ) {
                var fn,
+                       alternateFn,
                        context,
-                       hasWikiEditorSurface, // The alt edit surface needs to implement the WikiEditor API
+                       hasWikiEditor,
                        needSave,
                        retval;
 
@@ -62,6 +63,12 @@
                        getContents: function () {
                                return this.val();
                        },
+                       /**
+                        * Set the contents of the textarea, replacing anything that was there before
+                        */
+                       setContents: function ( content ) {
+                               this.val( content );
+                       },
                        /**
                         * Get the currently selected text in this textarea. Will focus the textarea
                         * in some browsers (IE/Opera)
@@ -110,12 +117,12 @@
                                                } else {
                                                        while ( selText.charAt( selText.length - 1 ) === ' ' ) {
                                                                // Exclude ending space char
-                                                               selText = selText.substring( 0, selText.length - 1 );
+                                                               selText = selText.slice( 0, -1 );
                                                                post += ' ';
                                                        }
                                                        while ( selText.charAt( 0 ) === ' ' ) {
                                                                // Exclude prepending space char
-                                                               selText = selText.substring( 1, selText.length );
+                                                               selText = selText.slice( 1 );
                                                                pre = ' ' + pre;
                                                        }
                                                }
@@ -227,8 +234,8 @@
                                                                        post += '\n';
                                                                }
                                                        }
-                                                       this.value = this.value.substring( 0, startPos ) + insertText +
-                                                               this.value.substring( endPos, this.value.length );
+                                                       this.value = this.value.slice( 0, startPos ) + insertText +
+                                                               this.value.slice( endPos );
                                                        // Setting this.value scrolls the textarea to the top, restore the scroll position
                                                        this.scrollTop = scrollTop;
                                                        if ( window.opera ) {
@@ -501,6 +508,8 @@
                        }
                };
 
+               alternateFn = $( this ).data( 'jquery.textSelection' );
+
                // Apply defaults
                switch ( command ) {
                        //case 'getContents': // no params
@@ -544,19 +553,30 @@
                                        force: false // Force a scroll even if the caret position is already visible
                                }, options );
                                break;
+                       case 'register':
+                               if ( alternateFn ) {
+                                       throw new Error( 'Another textSelection API was already registered' );
+                               }
+                               $( this ).data( 'jquery.textSelection', options );
+                               // No need to update alternateFn as this command only stores the options.
+                               // A command that uses it will set it again.
+                               return;
+                       case 'unregister':
+                               $( this ).removeData( 'jquery.textSelection' );
+                               return;
                }
 
                context = $( this ).data( 'wikiEditor-context' );
-               hasWikiEditorSurface = ( context !== undefined );
+               hasWikiEditor = ( context !== undefined && context.$iframe !== undefined );
 
                // IE selection restore voodoo
                needSave = false;
-               if ( hasWikiEditorSurface && context.savedSelection !== null ) {
+               if ( hasWikiEditor && context.savedSelection !== null ) {
                        context.fn.restoreSelection();
                        needSave = true;
                }
-               retval = ( hasWikiEditorSurface && context.fn[command] !== undefined ? context.fn : fn )[command].call( this, options );
-               if ( hasWikiEditorSurface && needSave ) {
+               retval = ( alternateFn && alternateFn[command] || fn[command] ).call( this, options );
+               if ( hasWikiEditor && needSave ) {
                        context.fn.saveSelection();
                }