337 lines
11 KiB
JavaScript
Executable file
337 lines
11 KiB
JavaScript
Executable file
/****
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* This page contains some general usefull functions for javascript
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*
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****/
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// need to redefine this functiondue to IE problem
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function getAttribute( elm, aname ) {
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try{
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var avalue = elm.getAttribute( aname );
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}catch(exept){
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}
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if ( ! avalue ) {
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for ( var i = 0; i < elm.attributes.length; i ++ ) {
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var taName = elm.attributes [i] .name.toLowerCase();
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if ( taName == aname ) {
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avalue = elm.attributes [i] .value;
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return avalue;
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}
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}
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}
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return avalue;
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};
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// need to redefine this function due to IE problem
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function setAttribute( elm, attr, val ) {
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if(attr=="class"){
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elm.setAttribute("className", val);
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elm.setAttribute("class", val);
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}else{
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elm.setAttribute(attr, val);
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}
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};
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/* return a child element
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elem: element we are searching in
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elem_type: type of the eleemnt we are searching (DIV, A, etc...)
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elem_attribute: attribute of the searched element that must match
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elem_attribute_match: value that elem_attribute must match
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option: "all" if must return an array of all children, otherwise return the first match element
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depth: depth of search (-1 or no set => unlimited)
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*/
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function getChildren(elem, elem_type, elem_attribute, elem_attribute_match, option, depth)
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{
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if(!option)
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var option="single";
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if(!depth)
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var depth=-1;
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if(elem){
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var children= elem.childNodes;
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var result=null;
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var results= new Array();
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for (var x=0;x<children.length;x++) {
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strTagName = new String(children[x].tagName);
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children_class="?";
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if(strTagName!= "undefined"){
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child_attribute= getAttribute(children[x],elem_attribute);
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if((strTagName.toLowerCase()==elem_type.toLowerCase() || elem_type=="") && (elem_attribute=="" || child_attribute==elem_attribute_match)){
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if(option=="all"){
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results.push(children[x]);
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}else{
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return children[x];
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}
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}
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if(depth!=0){
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result=getChildren(children[x], elem_type, elem_attribute, elem_attribute_match, option, depth-1);
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if(option=="all"){
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if(result.length>0){
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results= results.concat(result);
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}
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}else if(result!=null){
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return result;
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}
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}
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}
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}
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if(option=="all")
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return results;
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}
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return null;
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};
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function isChildOf(elem, parent){
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if(elem){
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if(elem==parent)
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return true;
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while(elem.parentNode != 'undefined'){
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return isChildOf(elem.parentNode, parent);
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}
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}
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return false;
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};
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function getMouseX(e){
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/*if(document.all)
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return event.x + document.body.scrollLeft;
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else
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return e.pageX;*/
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if(e!=null && typeof(e.pageX)!="undefined"){
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return e.pageX;
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}else{
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return (e!=null?e.x:event.x)+ document.documentElement.scrollLeft;
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}
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//return (e!=null) ? e.pageX : event.x + document.documentElement.scrollLeft;
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};
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function getMouseY(e){
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/*if(document.all)
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return event.y + document.body.scrollTop;
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else
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return e.pageY;*/
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if(e!=null && typeof(e.pageY)!="undefined"){
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return e.pageY;
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}else{
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return (e!=null?e.y:event.y)+ document.documentElement.scrollTop;
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}
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//return (e!=null) ? e.pageY : event.y + document.documentElement.scrollTop;
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};
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function calculeOffsetLeft(r){
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return calculeOffset(r,"offsetLeft")
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};
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function calculeOffsetTop(r){
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return calculeOffset(r,"offsetTop")
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};
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function calculeOffset(element,attr){
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var offset=0;
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while(element){
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offset+=element[attr];
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element=element.offsetParent
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}
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return offset;
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};
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/** return the computed style
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* @param: elem: the reference to the element
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* @param: prop: the name of the css property
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*/
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function get_css_property(elem, prop)
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{
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if(document.defaultView)
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{
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return document.defaultView.getComputedStyle(elem, null).getPropertyValue(prop);
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}
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else if(elem.currentStyle)
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{
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var prop = prop.replace(/-\D/gi, function(sMatch)
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{
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return sMatch.charAt(sMatch.length - 1).toUpperCase();
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});
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return elem.currentStyle[prop];
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}
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else return null;
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}
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/****
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* Moving an element
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***/
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var move_current_element;
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/* allow to move an element in a window
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e: the event
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id: the id of the element
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frame: the frame of the element
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ex of use:
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in html: <img id='move_area_search_replace' onmousedown='return parent.start_move_element(event,"area_search_replace", parent.frames["this_frame_id"]);' .../>
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or
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in javascript: document.getElementById("my_div").onmousedown= start_move_element
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*/
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function start_move_element(e, id, frame){
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var elem_id=(e.target || e.srcElement).id;
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if(id)
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elem_id=id;
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if(!frame)
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frame=window;
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if(frame.event)
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e=frame.event;
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move_current_element= frame.document.getElementById(elem_id);
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move_current_element.frame=frame;
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frame.document.onmousemove= move_element;
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frame.document.onmouseup= end_move_element;
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/*move_current_element.onmousemove= move_element;
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move_current_element.onmouseup= end_move_element;*/
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//alert(move_current_element.frame.document.body.offsetHeight);
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mouse_x= getMouseX(e);
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mouse_y= getMouseY(e);
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//window.status=frame+ " elem: "+elem_id+" elem: "+ move_current_element + " mouse_x: "+mouse_x;
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move_current_element.start_pos_x = mouse_x - (move_current_element.style.left.replace("px","") || calculeOffsetLeft(move_current_element));
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move_current_element.start_pos_y = mouse_y - (move_current_element.style.top.replace("px","") || calculeOffsetTop(move_current_element));
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return false;
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};
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function end_move_element(e){
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move_current_element.frame.document.onmousemove= "";
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move_current_element.frame.document.onmouseup= "";
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move_current_element=null;
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};
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function move_element(e){
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/*window.status="move"+frame;
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window.status="move2"+frame.event;*/
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if(move_current_element.frame && move_current_element.frame.event)
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e=move_current_element.frame.event;
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var mouse_x=getMouseX(e);
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var mouse_y=getMouseY(e);
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var new_top= mouse_y - move_current_element.start_pos_y;
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var new_left= mouse_x - move_current_element.start_pos_x;
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var max_left= move_current_element.frame.document.body.offsetWidth- move_current_element.offsetWidth;
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max_top= move_current_element.frame.document.body.offsetHeight- move_current_element.offsetHeight;
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new_top= Math.min(Math.max(0, new_top), max_top);
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new_left= Math.min(Math.max(0, new_left), max_left);
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move_current_element.style.top= new_top+"px";
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move_current_element.style.left= new_left+"px";
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return false;
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};
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/***
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* Managing a textarea (this part need the navigator infos from editAreaLoader
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***/
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var nav= editAreaLoader.nav;
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// allow to get infos on the selection: array(start, end)
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function getSelectionRange(textarea){
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//if(nav['isIE'])
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// get_IE_selection(textarea);
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return {"start": textarea.selectionStart, "end": textarea.selectionEnd};
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};
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// allow to set the selection
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function setSelectionRange(textarea, start, end){
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textarea.focus();
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start= Math.max(0, Math.min(textarea.value.length, start));
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end= Math.max(start, Math.min(textarea.value.length, end));
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if(nav['isOpera']){ // Opera bug when moving selection start and selection end
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textarea.selectionEnd = 1;
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textarea.selectionStart = 0;
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textarea.selectionEnd = 1;
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textarea.selectionStart = 0;
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}
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textarea.selectionStart = start;
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textarea.selectionEnd = end;
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//textarea.setSelectionRange(start, end);
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if(nav['isIE'])
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set_IE_selection(textarea);
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};
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// set IE position in Firefox mode (textarea.selectionStart and textarea.selectionEnd). should work as a repeated task
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function get_IE_selection(textarea){
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if(textarea && textarea.focused)
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{
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if(!textarea.ea_line_height)
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{ // calculate the lineHeight
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var div= document.createElement("div");
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div.style.fontFamily= get_css_property(textarea, "font-family");
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div.style.fontSize= get_css_property(textarea, "font-size");
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div.style.visibility= "hidden";
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div.innerHTML="0";
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document.body.appendChild(div);
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textarea.ea_line_height= div.offsetHeight;
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document.body.removeChild(div);
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}
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//textarea.focus();
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var range = document.selection.createRange();
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var stored_range = range.duplicate();
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stored_range.moveToElementText( textarea );
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stored_range.setEndPoint( 'EndToEnd', range );
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if(stored_range.parentElement()==textarea){
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// the range don't take care of empty lines in the end of the selection
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var elem= textarea;
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var scrollTop= 0;
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while(elem.parentNode){
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scrollTop+= elem.scrollTop;
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elem= elem.parentNode;
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}
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// var scrollTop= textarea.scrollTop + document.body.scrollTop;
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// var relative_top= range.offsetTop - calculeOffsetTop(textarea) + scrollTop;
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var relative_top= range.offsetTop - calculeOffsetTop(textarea)+ scrollTop;
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// alert("rangeoffset: "+ range.offsetTop +"\ncalcoffsetTop: "+ calculeOffsetTop(textarea) +"\nrelativeTop: "+ relative_top);
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var line_start = Math.round((relative_top / textarea.ea_line_height) +1);
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var line_nb= Math.round(range.boundingHeight / textarea.ea_line_height);
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// alert("store_range: "+ stored_range.text.length+"\nrange: "+range.text.length+"\nrange_text: "+ range.text);
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var range_start= stored_range.text.length - range.text.length;
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var tab= textarea.value.substr(0, range_start).split("\n");
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range_start+= (line_start - tab.length)*2; // add missing empty lines to the selection
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textarea.selectionStart = range_start;
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var range_end= textarea.selectionStart + range.text.length;
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tab= textarea.value.substr(0, range_start + range.text.length).split("\n");
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range_end+= (line_start + line_nb - 1 - tab.length)*2;
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textarea.selectionEnd = range_end;
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}
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}
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setTimeout("get_IE_selection(document.getElementById('"+ textarea.id +"'));", 50);
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};
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function IE_textarea_focus(){
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event.srcElement.focused= true;
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}
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function IE_textarea_blur(){
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event.srcElement.focused= false;
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}
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// select the text for IE (take into account the \r difference)
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function set_IE_selection(textarea){
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if(!window.closed){
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var nbLineStart=textarea.value.substr(0, textarea.selectionStart).split("\n").length - 1;
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var nbLineEnd=textarea.value.substr(0, textarea.selectionEnd).split("\n").length - 1;
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var range = document.selection.createRange();
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range.moveToElementText( textarea );
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range.setEndPoint( 'EndToStart', range );
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range.moveStart('character', textarea.selectionStart - nbLineStart);
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range.moveEnd('character', textarea.selectionEnd - nbLineEnd - (textarea.selectionStart - nbLineStart) );
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range.select();
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}
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};
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editAreaLoader.waiting_loading["elements_functions.js"]= "loaded";
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