337 Zeilen
9.5 KiB
JavaScript
337 Zeilen
9.5 KiB
JavaScript
/****
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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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var aValue,taName,i;
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try{
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aValue = elm.getAttribute( aName );
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}catch(exept){}
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if( ! aValue ){
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for( i = 0; i < elm.attributes.length; i ++ ) {
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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= [];
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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(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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};
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function getMouseY(e){
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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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};
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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 _mCE; // currently moving 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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_mCE= frame.document.getElementById(elem_id);
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_mCE.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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/*_mCE.onmousemove= move_element;
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_mCE.onmouseup= end_move_element;*/
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//alert(_mCE.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: "+ _mCE + " mouse_x: "+mouse_x;
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_mCE.start_pos_x = mouse_x - (_mCE.style.left.replace("px","") || calculeOffsetLeft(_mCE));
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_mCE.start_pos_y = mouse_y - (_mCE.style.top.replace("px","") || calculeOffsetTop(_mCE));
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return false;
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};
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function end_move_element(e){
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_mCE.frame.document.onmousemove= "";
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_mCE.frame.document.onmouseup= "";
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_mCE=null;
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};
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function move_element(e){
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var newTop,newLeft,maxLeft;
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if( _mCE.frame && _mCE.frame.event )
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e=_mCE.frame.event;
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newTop = getMouseY(e) - _mCE.start_pos_y;
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newLeft = getMouseX(e) - _mCE.start_pos_x;
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maxLeft = _mCE.frame.document.body.offsetWidth- _mCE.offsetWidth;
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max_top = _mCE.frame.document.body.offsetHeight- _mCE.offsetHeight;
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newTop = Math.min(Math.max(0, newTop), max_top);
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newLeft = Math.min(Math.max(0, newLeft), maxLeft);
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_mCE.style.top = newTop+"px";
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_mCE.style.left = newLeft+"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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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(t, start, end){
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t.focus();
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start = Math.max(0, Math.min(t.value.length, start));
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end = Math.max(start, Math.min(t.value.length, end));
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if( nav.isOpera && nav.isOpera < 9.6 ){ // Opera bug when moving selection start and selection end
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t.selectionEnd = 1;
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t.selectionStart = 0;
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t.selectionEnd = 1;
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t.selectionStart = 0;
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}
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t.selectionStart = start;
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t.selectionEnd = end;
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//textarea.setSelectionRange(start, end);
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if(nav.isIE)
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set_IE_selection(t);
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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(t){
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var d=document,div,range,stored_range,elem,scrollTop,relative_top,line_start,line_nb,range_start,range_end,tab;
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if(t && t.focused)
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{
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if(!t.ea_line_height)
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{ // calculate the lineHeight
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div= d.createElement("div");
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div.style.fontFamily= get_css_property(t, "font-family");
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div.style.fontSize= get_css_property(t, "font-size");
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div.style.visibility= "hidden";
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div.innerHTML="0";
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d.body.appendChild(div);
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t.ea_line_height= div.offsetHeight;
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d.body.removeChild(div);
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}
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//t.focus();
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range = d.selection.createRange();
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try
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{
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stored_range = range.duplicate();
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stored_range.moveToElementText( t );
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stored_range.setEndPoint( 'EndToEnd', range );
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if(stored_range.parentElement() == t){
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// the range don't take care of empty lines in the end of the selection
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elem = t;
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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= t.scrollTop + document.body.scrollTop;
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// var relative_top= range.offsetTop - calculeOffsetTop(t) + scrollTop;
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relative_top= range.offsetTop - calculeOffsetTop(t)+ scrollTop;
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// alert("rangeoffset: "+ range.offsetTop +"\ncalcoffsetTop: "+ calculeOffsetTop(t) +"\nrelativeTop: "+ relative_top);
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line_start = Math.round((relative_top / t.ea_line_height) +1);
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line_nb = Math.round(range.boundingHeight / t.ea_line_height);
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range_start = stored_range.text.length - range.text.length;
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tab = t.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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t.selectionStart = range_start;
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range_end = t.selectionStart + range.text.length;
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tab = t.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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t.selectionEnd = range_end;
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}
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}
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catch(e){}
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}
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if( t && t.id )
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{
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setTimeout("get_IE_selection(document.getElementById('"+ t.id +"'));", 50);
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}
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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( t ){
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var nbLineStart,nbLineStart,nbLineEnd,range;
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if(!window.closed){
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nbLineStart=t.value.substr(0, t.selectionStart).split("\n").length - 1;
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nbLineEnd=t.value.substr(0, t.selectionEnd).split("\n").length - 1;
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try
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{
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range = document.selection.createRange();
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range.moveToElementText( t );
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range.setEndPoint( 'EndToStart', range );
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range.moveStart('character', t.selectionStart - nbLineStart);
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range.moveEnd('character', t.selectionEnd - nbLineEnd - (t.selectionStart - nbLineStart) );
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range.select();
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}
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catch(e){}
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}
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};
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editAreaLoader.waiting_loading["elements_functions.js"]= "loaded";
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