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/**
* The Link Wizard
*
* @author Andreas Gohr <gohr@cosmocode.de>
*/
var linkwiz = {
wiz: null,
entry: null,
result: null,
timer: null,
sack: null,
textArea: null,
selected: -1,
selection: null,
/**
* Initialize the linkwizard by creating the needed HTML
* and attaching the eventhandlers
*/
init: function(textArea){
// prepare AJAX object
linkwiz.sack = new sack(DOKU_BASE + 'lib/exe/ajax.php');
linkwiz.sack.AjaxFailedAlert = '';
linkwiz.sack.encodeURIString = false;
// create HTML Structure
linkwiz.wiz = document.createElement('div');
linkwiz.wiz.id = 'link__wiz';
linkwiz.wiz.className = 'picker';
linkwiz.wiz.style.top = (findPosY(textArea)+20)+'px';
linkwiz.wiz.style.left = (findPosX(textArea)+80)+'px';
linkwiz.wiz.style.marginLeft = '-10000px';
linkwiz.wiz.innerHTML =
'<div id="link__wiz_header">'+
'<img src="'+DOKU_BASE+'lib/images/close.png" width="16" height="16" align="right" alt="" id="link__wiz_close" />'+
LANG['linkwiz']+'</div>'+
'<div>'+LANG['linkto']+' <input type="text" class="edit" id="link__wiz_entry" autocomplete="off" /></div>'+
'<div id="link__wiz_result"></div>';
textArea.form.parentNode.appendChild(linkwiz.wiz);
linkwiz.textArea = textArea;
linkwiz.result = DOKUid('link__wiz_result');
linkwiz.entry = DOKUid('link__wiz_entry');
// attach event handlers
var obj;
obj = DOKUid('link__wiz_close');
obj.onclick = linkwiz.hide;
linkwiz.sack.elementObj = linkwiz.result;
addEvent(linkwiz.entry,'keyup',linkwiz.onEntry);
addEvent(linkwiz.result,'click',linkwiz.onResultClick);
drag.attach(linkwiz.wiz,DOKUid('link__wiz_header'));
},
/**
* handle all keyup events in the entry field
*/
onEntry: function(e){
if(e.keyCode == 37 || e.keyCode == 39){ //left/right
return true; //ignore
}
if(e.keyCode == 27){
linkwiz.hide();
e.preventDefault();
e.stopPropagation();
return false;
}
if(e.keyCode == 38){ //Up
linkwiz.select(linkwiz.selected -1);
e.preventDefault();
e.stopPropagation();
return false;
}
if(e.keyCode == 40){ //Down
linkwiz.select(linkwiz.selected +1);
e.preventDefault();
e.stopPropagation();
return false;
}
if(e.keyCode == 13){ //Enter
if(linkwiz.selected > -1){
var obj = linkwiz.getResult(linkwiz.selected);
if(obj){
var a = obj.getElementsByTagName('A')[0];
linkwiz.resultClick(a);
}
}else if(linkwiz.entry.value){
linkwiz.insertLink(linkwiz.entry.value);
}
e.preventDefault();
e.stopPropagation();
return false;
}
linkwiz.autocomplete();
},
/**
* Get one of the result by index
*
* @param int result div to return
* @returns DOMObject or null
*/
getResult: function(num){
var obj;
var childs = linkwiz.result.getElementsByTagName('DIV');
obj = childs[num];
if(obj){
return obj;
}else{
return null;
}
},
/**
* Select the given result
*/
select: function(num){
if(num < 0){
linkwiz.deselect();
return;
}
var obj = linkwiz.getResult(num);
if(obj){
linkwiz.deselect();
obj.className += ' selected';
// make sure the item is viewable in the scroll view
// FIXME check IE compatibility
if(obj.offsetTop > linkwiz.result.scrollTop + linkwiz.result.clientHeight){
linkwiz.result.scrollTop += obj.clientHeight;
}else if(obj.offsetTop - linkwiz.result.clientHeight < linkwiz.result.scrollTop){ // this works but isn't quite right, fixes welcome
linkwiz.result.scrollTop -= obj.clientHeight;
}
// now recheck - if still not in view, the user used the mouse to scroll
if( (obj.offsetTop > linkwiz.result.scrollTop + linkwiz.result.clientHeight) ||
(obj.offsetTop < linkwiz.result.scrollTop) ){
obj.scrollIntoView();
}
linkwiz.selected = num;
}
},
/**
* deselect a result if any is selected
*/
deselect: function(){
if(linkwiz.selected > -1){
var obj = linkwiz.getResult(linkwiz.selected);
if(obj){
obj.className = obj.className.replace(/ ?selected/,'');
}
}
linkwiz.selected = -1;
},
/**
* Handle clicks in the result set an dispatch them to
* resultClick()
*/
onResultClick: function(e){
if(e.target.tagName != 'A') return;
e.stopPropagation();
e.preventDefault();
linkwiz.resultClick(e.target);
return false;
},
/**
* Handles the "click" on a given result anchor
*/
resultClick: function(a){
var id = a.title;
if(id == '' || id.substr(id.length-1) == ':'){
linkwiz.entry.value = id;
linkwiz.autocomplete_exec();
}else{
linkwiz.entry.value = id;
if(a.nextSibling && a.nextSibling.tagName == 'SPAN'){
linkwiz.insertLink(a.nextSibling.innerHTML);
}else{
linkwiz.insertLink('');
}
}
},
/**
* Insert the id currently in the entry box to the textarea,
* replacing the current selection or at the curso postion.
* When no selection is available the given title will be used
* as link title instead
*/
insertLink: function(title){
if(!linkwiz.entry.value) return;
var sel = getSelection(linkwiz.textArea);
if(sel.start == 0 && sel.end == 0) sel = linkwiz.selection;
var stxt = sel.getText();
if(!stxt && !DOKU_UHC) stxt=title;
// prepend colon inside namespaces for non namespace pages
if(linkwiz.textArea.form['id'].value.indexOf(':') != -1 &&
linkwiz.entry.value.indexOf(':') == -1){
linkwiz.entry.value = ':'+linkwiz.entry.value;
}
var link = '[['+linkwiz.entry.value+'|';
if(stxt) link += stxt;
link += ']]';
var so = linkwiz.entry.value.length+3;
var eo = 2;
pasteText(sel,link,{startofs: so, endofs: eo});
linkwiz.hide();
},
/**
* Start the page/namespace lookup timer
*
* Calls autocomplete_exec when the timer runs out
*/
autocomplete: function(){
if(linkwiz.timer !== null){
window.clearTimeout(linkwiz.timer);
linkwiz.timer = null;
}
linkwiz.timer = window.setTimeout(linkwiz.autocomplete_exec,350);
},
/**
* Executes the AJAX call for the page/namespace lookup
*/
autocomplete_exec: function(){
linkwiz.deselect();
linkwiz.result.innerHTML = '<img src="'+DOKU_BASE+'lib/images/throbber.gif" alt="" width="16" height="16" />';
linkwiz.sack.runAJAX('call=linkwiz&q='+encodeURI(linkwiz.entry.value));
},
/**
* Clears the result area
*/
clear: function(){
linkwiz.result.innerHTML = 'Search for a matching page name above, or browse through the pages on the right';
linkwiz.entry.value = '';
},
/**
* Show the linkwizard
*/
show: function(){
linkwiz.selection = getSelection(linkwiz.textArea);
linkwiz.wiz.style.marginLeft = '0px';
linkwiz.entry.focus();
linkwiz.autocomplete();
},
/**
* Hide the link wizard
*/
hide: function(){
linkwiz.wiz.style.marginLeft = '-10000px';
linkwiz.textArea.focus();
},
/**
* Toggle the link wizard
*/
toggle: function(){
if(linkwiz.wiz.style.marginLeft == '-10000px'){
linkwiz.show();
}else{
linkwiz.hide();
}
}
};
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