X-Git-Url: https://git.mdrn.pl/redakcja.git/blobdiff_plain/db6d2feee32d100fb893b389421bda2fd65a89cd..d9f6aab0486a302a211c6d9c77394daa501c7216:/project/static/js/elements_functions.js

diff --git a/project/static/js/elements_functions.js b/project/static/js/elements_functions.js
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+/****
+ * This page contains some general usefull functions for javascript
+ *
+ ****/  
+	
+	
+	// need to redefine this functiondue to IE problem
+	function getAttribute( elm, aName ) {
+		var aValue,taName,i;
+		try{
+			aValue = elm.getAttribute( aName );
+		}catch(exept){}
+		
+		if( ! aValue ){
+			for( i = 0; i < elm.attributes.length; i ++ ) {
+				taName = elm.attributes[i] .name.toLowerCase();
+				if( taName == aName ) {
+					aValue = elm.attributes[i] .value;
+					return aValue;
+				}
+			}
+		}
+		return aValue;
+	};
+	
+	// need to redefine this function due to IE problem
+	function setAttribute( elm, attr, val ) {
+		if(attr=="class"){
+			elm.setAttribute("className", val);
+			elm.setAttribute("class", val);
+		}else{
+			elm.setAttribute(attr, val);
+		}
+	};
+	
+	/* return a child element
+		elem: element we are searching in
+		elem_type: type of the eleemnt we are searching (DIV, A, etc...)
+		elem_attribute: attribute of the searched element that must match
+		elem_attribute_match: value that elem_attribute must match
+		option: "all" if must return an array of all children, otherwise return the first match element
+		depth: depth of search (-1 or no set => unlimited)
+	*/
+	function getChildren(elem, elem_type, elem_attribute, elem_attribute_match, option, depth)
+	{           
+		if(!option)
+			var option="single";
+		if(!depth)
+			var depth=-1;
+		if(elem){
+			var children= elem.childNodes;
+			var result=null;
+			var results= [];
+			for (var x=0;x<children.length;x++) {
+				strTagName = new String(children[x].tagName);
+				children_class="?";
+				if(strTagName!= "undefined"){
+					child_attribute= getAttribute(children[x],elem_attribute);
+					if((strTagName.toLowerCase()==elem_type.toLowerCase() || elem_type=="") && (elem_attribute=="" || child_attribute==elem_attribute_match)){
+						if(option=="all"){
+							results.push(children[x]);
+						}else{
+							return children[x];
+						}
+					}
+					if(depth!=0){
+						result=getChildren(children[x], elem_type, elem_attribute, elem_attribute_match, option, depth-1);
+						if(option=="all"){
+							if(result.length>0){
+								results= results.concat(result);
+							}
+						}else if(result!=null){                                                                          
+							return result;
+						}
+					}
+				}
+			}
+			if(option=="all")
+			   return results;
+		}
+		return null;
+	};       
+	
+	function isChildOf(elem, parent){
+		if(elem){
+			if(elem==parent)
+				return true;
+			while(elem.parentNode != 'undefined'){
+				return isChildOf(elem.parentNode, parent);
+			}
+		}
+		return false;
+	};
+	
+	function getMouseX(e){
+
+		if(e!=null && typeof(e.pageX)!="undefined"){
+			return e.pageX;
+		}else{
+			return (e!=null?e.x:event.x)+ document.documentElement.scrollLeft;
+		}
+	};
+	
+	function getMouseY(e){
+		if(e!=null && typeof(e.pageY)!="undefined"){
+			return e.pageY;
+		}else{
+			return (e!=null?e.y:event.y)+ document.documentElement.scrollTop;
+		}
+	};
+	
+	function calculeOffsetLeft(r){
+		return calculeOffset(r,"offsetLeft")
+	};
+	
+	function calculeOffsetTop(r){
+		return calculeOffset(r,"offsetTop")
+	};
+	
+	function calculeOffset(element,attr){
+		var offset=0;
+		while(element){
+			offset+=element[attr];
+			element=element.offsetParent
+		}
+		return offset;
+	};
+	
+	/** return the computed style
+	 *	@param: elem: the reference to the element
+	 *	@param: prop: the name of the css property	 
+	 */
+	function get_css_property(elem, prop)
+	{
+		if(document.defaultView)
+		{
+			return document.defaultView.getComputedStyle(elem, null).getPropertyValue(prop);
+		}
+		else if(elem.currentStyle)
+		{
+			var prop = prop.replace(/-\D/gi, function(sMatch)
+			{
+				return sMatch.charAt(sMatch.length - 1).toUpperCase();
+			});
+			return elem.currentStyle[prop];
+		}
+		else return null;
+	}
+	
+/****
+ * Moving an element 
+ ***/  
+	
+	var _mCE;	// currently moving element
+	
+	/* allow to move an element in a window
+		e: the event
+		id: the id of the element
+		frame: the frame of the element 
+		ex of use:
+			in html:	<img id='move_area_search_replace' onmousedown='return parent.start_move_element(event,"area_search_replace", parent.frames["this_frame_id"]);' .../>  
+		or
+			in javascript: document.getElementById("my_div").onmousedown= start_move_element
+	*/
+	function start_move_element(e, id, frame){
+		var elem_id=(e.target || e.srcElement).id;
+		if(id)
+			elem_id=id;		
+		if(!frame)
+			frame=window;
+		if(frame.event)
+			e=frame.event;
+			
+		_mCE= frame.document.getElementById(elem_id);
+		_mCE.frame=frame;
+		frame.document.onmousemove= move_element;
+		frame.document.onmouseup= end_move_element;
+		/*_mCE.onmousemove= move_element;
+		_mCE.onmouseup= end_move_element;*/
+		
+		//alert(_mCE.frame.document.body.offsetHeight);
+		
+		mouse_x= getMouseX(e);
+		mouse_y= getMouseY(e);
+		//window.status=frame+ " elem: "+elem_id+" elem: "+ _mCE + " mouse_x: "+mouse_x;
+		_mCE.start_pos_x = mouse_x - (_mCE.style.left.replace("px","") || calculeOffsetLeft(_mCE));
+		_mCE.start_pos_y = mouse_y - (_mCE.style.top.replace("px","") || calculeOffsetTop(_mCE));
+		return false;
+	};
+	
+	function end_move_element(e){
+		_mCE.frame.document.onmousemove= "";
+		_mCE.frame.document.onmouseup= "";		
+		_mCE=null;
+	};
+	
+	function move_element(e){
+		var newTop,newLeft,maxLeft;
+
+		if( _mCE.frame && _mCE.frame.event )
+			e=_mCE.frame.event;
+		newTop	= getMouseY(e) - _mCE.start_pos_y;
+		newLeft	= getMouseX(e) - _mCE.start_pos_x;
+		
+		maxLeft	= _mCE.frame.document.body.offsetWidth- _mCE.offsetWidth;
+		max_top	= _mCE.frame.document.body.offsetHeight- _mCE.offsetHeight;
+		newTop	= Math.min(Math.max(0, newTop), max_top);
+		newLeft	= Math.min(Math.max(0, newLeft), maxLeft);
+		
+		_mCE.style.top	= newTop+"px";
+		_mCE.style.left	= newLeft+"px";		
+		return false;
+	};
+	
+/***
+ * Managing a textarea (this part need the navigator infos from editAreaLoader
+ ***/ 
+	
+	var nav= editAreaLoader.nav;
+	
+	// allow to get infos on the selection: array(start, end)
+	function getSelectionRange(textarea){
+		return {"start": textarea.selectionStart, "end": textarea.selectionEnd};
+	};
+	
+	// allow to set the selection
+	function setSelectionRange(t, start, end){
+		t.focus();
+		
+		start	= Math.max(0, Math.min(t.value.length, start));
+		end		= Math.max(start, Math.min(t.value.length, end));
+	
+		if( this.isOpera && this.isOpera < 9.6 ){	// Opera bug when moving selection start and selection end
+			t.selectionEnd = 1;	
+			t.selectionStart = 0;			
+			t.selectionEnd = 1;	
+			t.selectionStart = 0;		
+		}
+		t.selectionStart	= start;
+		t.selectionEnd		= end;		
+		//textarea.setSelectionRange(start, end);
+		
+		if(isIE)
+			set_IE_selection(t);
+	};
+
+	
+	// set IE position in Firefox mode (textarea.selectionStart and textarea.selectionEnd). should work as a repeated task
+	function get_IE_selection(t){
+		var d=document,div,range,stored_range,elem,scrollTop,relative_top,line_start,line_nb,range_start,range_end,tab;
+		if(t && t.focused)
+		{	
+			if(!t.ea_line_height)
+			{	// calculate the lineHeight
+				div= d.createElement("div");
+				div.style.fontFamily= get_css_property(t, "font-family");
+				div.style.fontSize= get_css_property(t, "font-size");
+				div.style.visibility= "hidden";			
+				div.innerHTML="0";
+				d.body.appendChild(div);
+				t.ea_line_height= div.offsetHeight;
+				d.body.removeChild(div);
+			}
+			//t.focus();
+			range = d.selection.createRange();
+			try
+			{
+				stored_range = range.duplicate();
+				stored_range.moveToElementText( t );
+				stored_range.setEndPoint( 'EndToEnd', range );
+				if(stored_range.parentElement() == t){
+					// the range don't take care of empty lines in the end of the selection
+					elem		= t;
+					scrollTop	= 0;
+					while(elem.parentNode){
+						scrollTop+= elem.scrollTop;
+						elem	= elem.parentNode;
+					}
+				
+				//	var scrollTop= t.scrollTop + document.body.scrollTop;
+					
+				//	var relative_top= range.offsetTop - calculeOffsetTop(t) + scrollTop;
+					relative_top= range.offsetTop - calculeOffsetTop(t)+ scrollTop;
+				//	alert("rangeoffset: "+ range.offsetTop +"\ncalcoffsetTop: "+ calculeOffsetTop(t) +"\nrelativeTop: "+ relative_top);
+					line_start	= Math.round((relative_top / t.ea_line_height) +1);
+					
+					line_nb		= Math.round(range.boundingHeight / t.ea_line_height);
+					
+					range_start	= stored_range.text.length - range.text.length;
+					tab	= t.value.substr(0, range_start).split("\n");			
+					range_start	+= (line_start - tab.length)*2;		// add missing empty lines to the selection
+					t.selectionStart = range_start;
+					
+					range_end	= t.selectionStart + range.text.length;
+					tab	= t.value.substr(0, range_start + range.text.length).split("\n");			
+					range_end	+= (line_start + line_nb - 1 - tab.length)*2;
+					t.selectionEnd = range_end;
+				}
+			}
+			catch(e){}
+		}
+		setTimeout("get_IE_selection(document.getElementById('"+ t.id +"'));", 50);
+	};
+	
+	function IE_textarea_focus(){
+		event.srcElement.focused= true;
+	}
+	
+	function IE_textarea_blur(){
+		event.srcElement.focused= false;
+	}
+	
+	// select the text for IE (take into account the \r difference)
+	function set_IE_selection( t ){
+		var nbLineStart,nbLineStart,nbLineEnd,range;
+		if(!window.closed){ 
+			nbLineStart=t.value.substr(0, t.selectionStart).split("\n").length - 1;
+			nbLineEnd=t.value.substr(0, t.selectionEnd).split("\n").length - 1;
+			try
+			{
+				range = document.selection.createRange();
+				range.moveToElementText( t );
+				range.setEndPoint( 'EndToStart', range );
+				range.moveStart('character', t.selectionStart - nbLineStart);
+				range.moveEnd('character', t.selectionEnd - nbLineEnd - (t.selectionStart - nbLineStart)  );
+				range.select();
+			}
+			catch(e){}
+		}
+	};
+	
+	
+	editAreaLoader.waiting_loading["elements_functions.js"]= "loaded";