GZ/nwyj/WebContent/admin/scripts/dojo/dijit/_editor/selection.js

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 document.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();
				}
			}
		},

		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 = document.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];
				}
			}
		},

		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;
					}
				}
			}
		},

		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;
		},

		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) {
					range.select();
				}
			} 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 _document = dojo.doc;
			element = dojo.byId(element);
			if (_document.selection && dojo.body().createTextRange) { // IE
				try {
					var 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
					var range = _document.createRange();
					range.selectNode(element);
					selection.removeAllRanges();
					selection.addRange(range);
				}
			}
		}
	});

}