From e44a7e37b6c7b5961adaffc62b9042b8d442938e Mon Sep 17 00:00:00 2001
From: mensonge
Date: Thu, 13 Nov 2008 09:49:11 +0000
Subject: New feature: basic Ajax suggestion for tags and implementation of
 Dojo toolkit

git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f
---
 includes/js/dijit/_editor/selection.js | 246 +++++++++++++++++++++++++++++++++
 1 file changed, 246 insertions(+)
 create mode 100644 includes/js/dijit/_editor/selection.js

(limited to 'includes/js/dijit/_editor/selection.js')

diff --git a/includes/js/dijit/_editor/selection.js b/includes/js/dijit/_editor/selection.js
new file mode 100644
index 0000000..9b403aa
--- /dev/null
+++ b/includes/js/dijit/_editor/selection.js
@@ -0,0 +1,246 @@
+if(!dojo._hasResource["dijit._editor.selection"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dijit._editor.selection"] = true;
+dojo.provide("dijit._editor.selection");
+
+// FIXME:
+//		all of these methods branch internally for IE. This is probably
+//		sub-optimal in terms of runtime performance. We should investigate the
+//		size difference for differentiating at definition time.
+
+dojo.mixin(dijit._editor.selection, {
+	getType: function(){
+		// summary: Get the selection type (like dojo.doc.select.type in IE).
+		if(dojo.doc.selection){ //IE
+			return dojo.doc.selection.type.toLowerCase();
+		}else{
+			var stype = "text";
+
+			// Check if the actual selection is a CONTROL (IMG, TABLE, HR, etc...).
+			var oSel;
+			try{
+				oSel = dojo.global.getSelection();
+			}catch(e){ /*squelch*/ }
+
+			if(oSel && oSel.rangeCount==1){
+				var oRange = oSel.getRangeAt(0);
+				if(	(oRange.startContainer == oRange.endContainer) &&
+					((oRange.endOffset - oRange.startOffset) == 1) &&
+					(oRange.startContainer.nodeType != 3 /* text node*/)
+				){
+					stype = "control";
+				}
+			}
+			return stype;
+		}
+	},
+
+	getSelectedText: function(){
+		// summary:
+		//		Return the text (no html tags) included in the current selection or null if no text is selected
+		if(dojo.doc.selection){ //IE
+			if(dijit._editor.selection.getType() == 'control'){
+				return null;
+			}
+			return dojo.doc.selection.createRange().text;
+		}else{
+			var selection = dojo.global.getSelection();
+			if(selection){
+				return selection.toString();
+			}
+		}
+		return ''
+	},
+
+	getSelectedHtml: function(){
+		// summary:
+		//		Return the html of the current selection or null if unavailable
+		if(dojo.doc.selection){ //IE
+			if(dijit._editor.selection.getType() == 'control'){
+				return null;
+			}
+			return dojo.doc.selection.createRange().htmlText;
+		}else{
+			var selection = dojo.global.getSelection();
+			if(selection && selection.rangeCount){
+				var frag = selection.getRangeAt(0).cloneContents();
+				var div = dojo.doc.createElement("div");
+				div.appendChild(frag);
+				return div.innerHTML;
+			}
+			return null;
+		}
+	},
+
+	getSelectedElement: function(){
+		// summary:
+		//		Retrieves the selected element (if any), just in the case that
+		//		a single element (object like and image or a table) is
+		//		selected.
+		if(this.getType() == "control"){
+			if(dojo.doc.selection){ //IE
+				var range = dojo.doc.selection.createRange();
+				if(range && range.item){
+					return dojo.doc.selection.createRange().item(0);
+				}
+			}else{
+				var selection = dojo.global.getSelection();
+				return selection.anchorNode.childNodes[ selection.anchorOffset ];
+			}
+		}
+		return null;
+	},
+
+	getParentElement: function(){
+		// summary:
+		//		Get the parent element of the current selection
+		if(this.getType() == "control"){
+			var p = this.getSelectedElement();
+			if(p){ return p.parentNode; }
+		}else{
+			if(dojo.doc.selection){ //IE
+				return dojo.doc.selection.createRange().parentElement();
+			}else{
+				var selection = dojo.global.getSelection();
+				if(selection){
+					var node = selection.anchorNode;
+
+					while(node && (node.nodeType != 1)){ // not an element
+						node = node.parentNode;
+					}
+
+					return node;
+				}
+			}
+		}
+		return null;
+	},
+
+	hasAncestorElement: function(/*String*/tagName /* ... */){
+		// summary:
+		// 		Check whether current selection has a  parent element which is
+		// 		of type tagName (or one of the other specified tagName)
+		return this.getAncestorElement.apply(this, arguments) != null;
+	},
+
+	getAncestorElement: function(/*String*/tagName /* ... */){
+		// summary:
+		//		Return the parent element of the current selection which is of
+		//		type tagName (or one of the other specified tagName)
+
+		var node = this.getSelectedElement() || this.getParentElement();
+		return this.getParentOfType(node, arguments);
+	},
+
+	isTag: function(/*DomNode*/node, /*Array*/tags){
+		if(node && node.tagName){
+			var _nlc = node.tagName.toLowerCase();
+			for(var i=0; i<tags.length; i++){
+				var _tlc = String(tags[i]).toLowerCase();
+				if(_nlc == _tlc){
+					return _tlc;
+				}
+			}
+		}
+		return "";
+	},
+
+	getParentOfType: function(/*DomNode*/node, /*Array*/tags){
+		while(node){
+			if(this.isTag(node, tags).length){
+				return node;
+			}
+			node = node.parentNode;
+		}
+		return null;
+	},
+
+	collapse: function(/*Boolean*/beginning) {
+		// summary: clear current selection
+	  if(window['getSelection']){
+	          var selection = dojo.global.getSelection();
+	          if(selection.removeAllRanges){ // Mozilla
+	                  if(beginning){
+	                          selection.collapseToStart();
+	                  }else{
+	                          selection.collapseToEnd();
+	                  }
+	          }else{ // Safari
+	                  // pulled from WebCore/ecma/kjs_window.cpp, line 2536
+	                   selection.collapse(beginning);
+	          }
+	  }else if(dojo.doc.selection){ // IE
+	          var range = dojo.doc.selection.createRange();
+	          range.collapse(beginning);
+	          range.select();
+	  }
+	},
+
+	remove: function(){
+		// summary: delete current selection
+		var _s = dojo.doc.selection;
+		if(_s){ //IE
+			if(_s.type.toLowerCase() != "none"){
+				_s.clear();
+			}
+			return _s;
+		}else{
+			_s = dojo.global.getSelection();
+			_s.deleteFromDocument();
+			return _s;
+		}
+	},
+
+	selectElementChildren: function(/*DomNode*/element,/*Boolean?*/nochangefocus){
+		// summary:
+		//		clear previous selection and select the content of the node
+		//		(excluding the node itself)
+		var _window = dojo.global;
+		var _document = dojo.doc;
+		element = dojo.byId(element);
+		if(_document.selection && dojo.body().createTextRange){ // IE
+			var range = element.ownerDocument.body.createTextRange();
+			range.moveToElementText(element);
+			if(!nochangefocus){
+				try{
+					range.select(); // IE throws an exception here if the widget is hidden.  See #5439
+				}catch(e){ /* squelch */}
+			}
+		}else if(_window.getSelection){
+			var selection = _window.getSelection();
+			if(selection.setBaseAndExtent){ // Safari
+				selection.setBaseAndExtent(element, 0, element, element.innerText.length - 1);
+			}else if(selection.selectAllChildren){ // Mozilla
+				selection.selectAllChildren(element);
+			}
+		}
+	},
+
+	selectElement: function(/*DomNode*/element,/*Boolean?*/nochangefocus){
+		// summary:
+		//		clear previous selection and select element (including all its children)
+		var range, _document = dojo.doc;
+		element = dojo.byId(element);
+		if(_document.selection && dojo.body().createTextRange){ // IE
+			try{
+				range = dojo.body().createControlRange();
+				range.addElement(element);
+				if(!nochangefocus){
+					range.select();
+				}
+			}catch(e){
+				this.selectElementChildren(element,nochangefocus);
+			}
+		}else if(dojo.global.getSelection){
+			var selection = dojo.global.getSelection();
+			// FIXME: does this work on Safari?
+			if(selection.removeAllRanges){ // Mozilla
+				range = _document.createRange();
+				range.selectNode(element);
+				selection.removeAllRanges();
+				selection.addRange(range);
+			}
+		}
+	}
+});
+
+}
-- 
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