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## TinyMCE_Selection.class.js

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Class Summary
TinyMCE_Selection |

    /**
     * $RCSfile: overview-summary-TinyMCE_Selection.class.js.html,v $
     * $Revision: 1.42 $
     * $Date: 2006/04/14 20:00:31 $
     *
     * @author Moxiecode
     * @copyright Copyright © 2004-2006, Moxiecode Systems AB, All rights reserved.
     */

    /**
     * Constructs a Selection instance and binds it to the specificed TinyMCE editor control.
     *
     * @param {TinyMCE_Control} inst TinyMCE editor control instance.
     * @constructor
     */
    function TinyMCE_Selection(inst) {
    	this.instance = inst;
    };

    TinyMCE_Selection.prototype = {
    	/**
    	 * Returns the selected HTML code.
    	 *
    	 * @return Selected HTML contents.
    	 * @type string
    	 */
    	getSelectedHTML : function() {
    		var inst = this.instance;
    		var e, r = this.getRng(), h;

    		if (tinyMCE.isSafari) {
    			// Not realy perfect!!
    			return r.toString();
    		}

    		e = document.createElement("body");

    		if (tinyMCE.isGecko)
    			e.appendChild(r.cloneContents());
    		else
    			e.innerHTML = r.item ? r.item(0).outerHTML : r.htmlText;

    		h = tinyMCE._cleanupHTML(inst, inst.contentDocument, inst.settings, e, e, false, true, false);

    		// When editing always use fonts internaly
    		if (tinyMCE.getParam("convert_fonts_to_spans"))
    			tinyMCE.convertSpansToFonts(inst.getDoc());

    		return h;
    	},

    	/**
    	 * Returns the selected text.
    	 *
    	 * @return Selected text contents.
    	 * @type string
    	 */
    	getSelectedText : function() {
    		var inst = this.instance;
    		var d, r, s, t;

    		if (tinyMCE.isMSIE) {
    			d = inst.getDoc();

    			if (d.selection.type == "Text") {
    				r = d.selection.createRange();
    				t = r.text;
    			} else
    				t = '';
    		} else {
    			s = this.getSel();

    			if (s && s.toString)
    				t = s.toString();
    			else
    				t = '';
    		}

    		return t;
    	},

    	/**
    	 * Returns a selection bookmark that can be restored later with moveToBookmark.
    	 * This acts much like the one MSIE has built in but this one is persistent if between DOM
    	 * tree rewritings. The simple mode enables a quicker and non persistent bookmark.
    	 *
    	 * @param {boolean} simple If this is set to true, the selection bookmark will not me dom persistent.
    	 * @return Selection bookmark that can be restored later with moveToBookmark.
    	 * @type TinyMCE_Bookmark
    	 */
    	getBookmark : function(simple) {
    		var rng = this.getRng();
    		var doc = this.instance.getDoc();
    		var sp, le, s, e, nl, i, si, ei;
    		var trng, sx, sy, xx = -999999999;

    		// Skip Opera for now
    		if (tinyMCE.isOpera)
    			return null;

    		sx = doc.body.scrollLeft + doc.documentElement.scrollLeft;
    		sy = doc.body.scrollTop + doc.documentElement.scrollTop;

    		if (tinyMCE.isSafari || tinyMCE.isGecko)
    			return {rng : rng, scrollX : sx, scrollY : sy};

    		if (tinyMCE.isMSIE) {
    			if (simple)
    				return {rng : rng};

    			if (rng.item) {
    				e = rng.item(0);

    				nl = doc.getElementsByTagName(e.nodeName);
    				for (i=0; i<nl.length; i++) {
    					if (e == nl[i]) {
    						sp = i;
    						break;
    					}
    				}

    				return {
    					tag : e.nodeName,
    					index : sp,
    					scrollX : sx,
    					scrollY : sy
    				};
    			} else {
    				trng = rng.duplicate();
    				trng.collapse(true);
    				sp = Math.abs(trng.move('character', xx));

    				trng = rng.duplicate();
    				trng.collapse(false);
    				le = Math.abs(trng.move('character', xx)) - sp;

    				return {
    					start : sp,
    					length : le,
    					scrollX : sx,
    					scrollY : sy
    				};
    			}
    		}

    		if (tinyMCE.isGecko) {
    			s = tinyMCE.getParentElement(rng.startContainer);
    			for (si=0; si<s.childNodes.length && s.childNodes[si] != rng.startContainer; si++) ;

    			nl = doc.getElementsByTagName(s.nodeName);
    			for (i=0; i<nl.length; i++) {
    					if (s == nl[i]) {
    						sp = i;
    						break;
    					}
    			}

    			e = tinyMCE.getParentElement(rng.endContainer);
    			for (ei=0; ei<e.childNodes.length && e.childNodes[ei] != rng.endContainer; ei++) ;

    			nl = doc.getElementsByTagName(e.nodeName);
    			for (i=0; i<nl.length; i++) {
    					if (e == nl[i]) {
    						le = i;
    						break;
    					}
    			}

    			//tinyMCE.debug(s.nodeName, sp, rng.startOffset, '-' , e.nodeName, le, rng.endOffset);
    			//tinyMCE.debug(sx, sy);

    			return {
    				startTag : s.nodeName,
    				start : sp,
    				startIndex : si,
    				endTag : e.nodeName,
    				end : le,
    				endIndex : ei,
    				startOffset : rng.startOffset,
    				endOffset : rng.endOffset,
    				scrollX : sx,
    				scrollY : sy
    			};
    		}

    		return null;
    	},

    	/**
    	 * Restores the selection to the specified bookmark.
    	 *
    	 * @param {TinyMCE_Bookmark} bookmark Bookmark to restore selection from.
    	 * @return true/false if it was successful or not.
    	 * @type boolean
    	 */
    	moveToBookmark : function(bookmark) {
    		var rng, nl, i;
    		var inst = this.instance;
    		var doc = inst.getDoc();
    		var win = inst.getWin();
    		var sel = this.getSel();

    		if (!bookmark)
    			return false;

    		if (tinyMCE.isSafari) {
    			sel.setBaseAndExtent(bookmark.startContainer, bookmark.startOffset, bookmark.endContainer, bookmark.endOffset);
    			return true;
    		}

    		if (tinyMCE.isMSIE) {
    			if (bookmark.rng) {
    				bookmark.rng.select();
    				return true;
    			}

    			win.focus();

    			if (bookmark.tag) {
    				rng = inst.getBody().createControlRange();

    				nl = doc.getElementsByTagName(bookmark.tag);

    				if (nl.length > bookmark.index) {
    					try {
    						rng.addElement(nl[bookmark.index]);
    					} catch (ex) {
    						// Might be thrown if the node no longer exists
    					}
    				}
    			} else {
    				rng = inst.getSel().createRange();
    				rng.moveToElementText(inst.getBody());
    				rng.collapse(true);
    				rng.moveStart('character', bookmark.start);
    				rng.moveEnd('character', bookmark.length);
    			}

    			rng.select();

    			win.scrollTo(bookmark.scrollX, bookmark.scrollY);
    			return true;
    		}

    		if (tinyMCE.isGecko && bookmark.rng) {
    			sel.removeAllRanges();
    			sel.addRange(bookmark.rng);
    			win.scrollTo(bookmark.scrollX, bookmark.scrollY);
    			return true;
    		}

    		if (tinyMCE.isGecko) {
    	//		try {
    				rng = doc.createRange();

    				nl = doc.getElementsByTagName(bookmark.startTag);
    				if (nl.length > bookmark.start)
    					rng.setStart(nl[bookmark.start].childNodes[bookmark.startIndex], bookmark.startOffset);

    				nl = doc.getElementsByTagName(bookmark.endTag);
    				if (nl.length > bookmark.end)
    					rng.setEnd(nl[bookmark.end].childNodes[bookmark.endIndex], bookmark.endOffset);

    				sel.removeAllRanges();
    				sel.addRange(rng);
    	/*		} catch {
    				// Ignore
    			}*/

    			win.scrollTo(bookmark.scrollX, bookmark.scrollY);
    			return true;
    		}

    		return false;
    	},

    	/**
    	 * Selects the specified node.
    	 *
    	 * @param {HTMLNode} node Node object to move selection to.
    	 * @param {boolean} collapse True/false if it will be collasped.
    	 * @param {boolean} select_text_node True/false if the text contents should be selected or not.
    	 * @param {boolean} to_start True/false if the collapse should be to start or end of range.
    	 */
    	selectNode : function(node, collapse, select_text_node, to_start) {
    		var inst = this.instance, sel, rng, nodes;

    		if (!node)
    			return;

    		if (typeof(collapse) == "undefined")
    			collapse = true;

    		if (typeof(select_text_node) == "undefined")
    			select_text_node = false;

    		if (typeof(to_start) == "undefined")
    			to_start = true;

    		if (tinyMCE.isMSIE) {
    			rng = inst.getBody().createTextRange();

    			try {
    				rng.moveToElementText(node);

    				if (collapse)
    					rng.collapse(to_start);

    				rng.select();
    			} catch (e) {
    				// Throws illigal agrument in MSIE some times
    			}
    		} else {
    			sel = this.getSel();

    			if (!sel)
    				return;

    			if (tinyMCE.isSafari) {
    				sel.setBaseAndExtent(node, 0, node, node.innerText.length);

    				if (collapse) {
    					if (to_start)
    						sel.collapseToStart();
    					else
    						sel.collapseToEnd();
    				}

    				this.scrollToNode(node);

    				return;
    			}

    			rng = inst.getDoc().createRange();

    			if (select_text_node) {
    				// Find first textnode in tree
    				nodes = tinyMCE.getNodeTree(node, new Array(), 3);
    				if (nodes.length > 0)
    					rng.selectNodeContents(nodes[0]);
    				else
    					rng.selectNodeContents(node);
    			} else
    				rng.selectNode(node);

    			if (collapse) {
    				// Special treatment of textnode collapse
    				if (!to_start && node.nodeType == 3) {
    					rng.setStart(node, node.nodeValue.length);
    					rng.setEnd(node, node.nodeValue.length);
    				} else
    					rng.collapse(to_start);
    			}

    			sel.removeAllRanges();
    			sel.addRange(rng);
    		}

    		this.scrollToNode(node);

    		// Set selected element
    		tinyMCE.selectedElement = null;
    		if (node.nodeType == 1)
    			tinyMCE.selectedElement = node;
    	},

    	/**
    	 * Scrolls to the specified node location.
    	 *
    	 * @param {HTMLNode} node Node to scroll to.
    	 */
    	scrollToNode : function(node) {
    		var inst = this.instance;
    		var pos, doc, scrollX, scrollY, height;

    		// Scroll to node position
    		pos = tinyMCE.getAbsPosition(node);
    		doc = inst.getDoc();
    		scrollX = doc.body.scrollLeft + doc.documentElement.scrollLeft;
    		scrollY = doc.body.scrollTop + doc.documentElement.scrollTop;
    		height = tinyMCE.isMSIE ? document.getElementById(inst.editorId).style.pixelHeight : inst.targetElement.clientHeight;

    		// Only scroll if out of visible area
    		if (!tinyMCE.settings['auto_resize'] && !(pos.absTop > scrollY && pos.absTop < (scrollY - 25 + height)))
    			inst.contentWindow.scrollTo(pos.absLeft, pos.absTop - height + 25);
    	},

    	/**
    	 * Returns the browsers selection instance.
    	 *
    	 * @return Browser selection instance.
    	 * @type DOMSelection
    	 */
    	getSel : function() {
    		var inst = this.instance;

    		if (tinyMCE.isMSIE && !tinyMCE.isOpera)
    			return inst.getDoc().selection;

    		return inst.contentWindow.getSelection();
    	},

    	/**
    	 * Returns the browsers selections first range instance.
    	 *
    	 * @return Browsers selections first range instance.
    	 * @type DOMRange
    	 */
    	getRng : function() {
    		var inst = this.instance;
    		var sel = this.getSel();

    		if (sel == null)
    			return null;

    		if (tinyMCE.isMSIE && !tinyMCE.isOpera)
    			return sel.createRange();

    		if (tinyMCE.isSafari && !sel.getRangeAt)
    			return '' + window.getSelection();

    		return sel.getRangeAt(0);
    	},

    	/**
    	 * Returns the currently selected/focused element.
    	 *
    	 * @return Currently selected element.
    	 * @type HTMLElement
    	 */
    	getFocusElement : function() {
    		var inst = this.instance;

    		if (tinyMCE.isMSIE && !tinyMCE.isOpera) {
    			var doc = inst.getDoc();
    			var rng = doc.selection.createRange();

    	//		if (rng.collapse)
    	//			rng.collapse(true);

    			var elm = rng.item ? rng.item(0) : rng.parentElement();
    		} else {
    			if (inst.isHidden())
    				return inst.getBody();

    			var sel = this.getSel();
    			var rng = this.getRng();

    			if (!sel || !rng)
    				return null;

    			var elm = rng.commonAncestorContainer;
    			//var elm = (sel && sel.anchorNode) ? sel.anchorNode : null;

    			// Handle selection a image or other control like element such as anchors
    			if (!rng.collapsed) {
    				// Is selection small
    				if (rng.startContainer == rng.endContainer) {
    					if (rng.startOffset - rng.endOffset < 2) {
    						if (rng.startContainer.hasChildNodes())
    							elm = rng.startContainer.childNodes[rng.startOffset];
    					}
    				}
    			}

    			// Get the element parent of the node
    			elm = tinyMCE.getParentElement(elm);

    			//if (tinyMCE.selectedElement != null && tinyMCE.selectedElement.nodeName.toLowerCase() == "img")
    			//	elm = tinyMCE.selectedElement;
    		}

    		return elm;
    	}
    };

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Documentation generated by JSDoc on Fri Apr 14 21:59:23 2006