/*
QuickLink.js
Copyright Francisco J. R. Prados 2009, Adam Meyer 2007
*/
var QuickLink = new Object();
QuickLink.searchTimeout = 500;
QuickLink.timer = 0;
QuickLink.counting = false;
QuickLink.searchBuffer = null;
QuickLink.searchBox = null;
QuickLink.textarea = null;
QuickLink.inputField = null;
QuickLink.lastLink = null;
QuickLink.linkStart = -1;
QuickLink.lastSelectedItem = -1;
QuickLink.caret = -1;
QuickLink.lastKey = null;
/*
QuickLink.insertLink function
This function will be triggered when clicking one of the results
returned to the QuickLinkResults div by the wfAjaxQuickLink call
*/
QuickLink.insertLink = function(name) {
// if QuickLink.linkStart > 0, the search was triggered by the [[ sequence
// otherwise the search was triggered by the input search box
if( QuickLink.linkStart>0 ) {
QuickLink.textarea.value = QuickLink.textarea.value.substr(0, QuickLink.linkStart-2) + '[[' + name + ']]' + QuickLink.textarea.value.substr( QuickLink.caret );
if(QuickLink.textarea.setSelectionRange)
QuickLink.textarea.setSelectionRange(QuickLink.linkStart + name.length + 2,QuickLink.linkStart + name.length + 2);
QuickLink.caret = QuickLink.linkStart + name.length + 2;
}
else {
QuickLink.textarea.value = QuickLink.textarea.value.substr( 0, QuickLink.caret ) + '[[' + name + ']]' + QuickLink.textarea.value.substr( QuickLink.caret );
// problems when using escape!
//insertTags('[['+name+']]', '', '');
QuickLink.inputField.value = '';
QuickLink.caret = QuickLink.caret + name.length + 4;
}
QuickLink.lastLink = name;
QuickLink.setCaret(QuickLink.caret);
QuickLink.resetSearchBox();
}
QuickLink.textareaOnClick = function(e) {
QuickLink.resetSearchBox();
QuickLink.caret = SearchCaret( this );
}
/*
Init function
Creates all the elements neeeded for the search, attachtes
the events and calls QuickLink.resetSearchBox()
*/
QuickLink.load = function() {
QuickLink.textarea = document.getElementById( 'wpTextbox1');
// first check if the textbox is readonly
// (i.e. in protected pages)
if(!QuickLink.textarea.readOnly) {
var toolbar = document.getElementById("toolbar");
QuickLink.textarea.onkeyup = QuickLink.textSearch;
QuickLink.textarea.onkeydown = QuickLink.captureKeys;
QuickLink.textarea.onclick = QuickLink.textareaOnClick;
// create the input search box in toolbar
var box = document.createElement("div");
box.title = "Link an der Cursor-Position einfĂźgen";
box.id = "QuickLinkBox";
toolbar.appendChild(box);
var label = document.createElement("span");
label.innerHTML = "QuickLink";
label.id = "QuickLinkLabel";
box.appendChild(label);
QuickLink.inputFieldLabel = document.createElement("label");
QuickLink.inputFieldLabel.id = "QuickLinkInputLabel";
QuickLink.inputFieldLabel.htmlFor = "QuickLinkInput";
QuickLink.inputFieldLabel.innerHTML = "Link:";
box.appendChild(QuickLink.inputFieldLabel);
QuickLink.inputField = document.createElement("input");
QuickLink.inputField.id = "QuickLinkInput";
QuickLink.inputField.onkeyup = QuickLink.delayedSearch;
box.appendChild(QuickLink.inputField);
var help = document.createElement("a");
help.innerHTML = "?";
help.title = "Press Ctrl+Space while writing the article to trigger the search box. Type a string and the matching results will be shown. Press enter to select the first result, or Esc to return to the writing box.";
//box.appendChild(help);
// create the box for results
QuickLink.searchBox = document.createElement("div");
QuickLink.searchBox.id = "QuickLinkResults";
toolbar.appendChild(QuickLink.searchBox);
// reset the search box to the initial state
QuickLink.resetSearchBox();
}
}
QuickLink.searchCall = function(query) {
if( QuickLink.lastSelectedItem >= 0) {
}
//QuickLink.searchBox.innerHTML = "<p>Retrieving results for '"+query+"' ...</p>";
sajax_do_call("wfAjaxQuickLink", [query], QuickLink.AJAXStateChange);
}
/*
Callback called when request.readyState = 4
*/
QuickLink.AJAXStateChange = function(request) {
QuickLink.searchBox.innerHTML = request.responseText;
QuickLink.selectResult(0);
}
/*
Delayed search method for the QuickLink.inputField.onkeyup event
*/
QuickLink.delayedSearch = function(e) {
var evt = (e) ? e : window.event;
var code = evt.keyCode ? evt.keyCode : evt.charCode ? evt.charCode : evt.which ? evt.which : void 0;
if(code == 27) {
QuickLink.resetLinkAndCaret(0);
}
else if(code == 13) {
QuickLink.insertSelectedResult();
}
else if(code == 38) {
QuickLink.selectPreviousResult();
}
else if(code == 40) {
QuickLink.selectNextResult();
}
else{
if(QuickLink.counting)
clearTimeout(QuickLink.timer);
QuickLink.timer = setTimeout("QuickLink.inputFieldSearch()",QuickLink.searchTimeout);
QuickLink.counting = true;
}
}
/*
Search method for the QuickLink.inputField.onkeyup event
*/
QuickLink.inputFieldSearch = function() {
// reset delayed search
QuickLink.counting = false;
var query = document.getElementById('QuickLinkInput').value;
if (query != QuickLink.searchBuffer) {
QuickLink.searchBuffer = query;
if(query.length > 0) {
QuickLink.initSearchBox();
if (query.length < 30 && query.length > 0 && query.value != "") {
QuickLink.searchCall(query);
}
}
else
QuickLink.resetSearchBox();
}
}
/*
Search method for IE
*/
SearchCaret = function(textarea) {
var caret = textarea.selectionEnd;
if(!caret) {
if( document.selection ){
// current selection
var range = document.selection.createRange();
var stored_range = range.duplicate();
// Select all text
stored_range.moveToElementText( textarea );
// move 'dummy' end point to end point of original range
stored_range.setEndPoint( 'EndToEnd', range );
// calculate caret position
caret = stored_range.text.length - range.text.length ;
} else {
caret = 0;
}
}
return caret;
}
/*
Search method for the QuickLink.textarea.onkeyup event
Search will be triggered when typing the sequence [[, or placing the caret
by an existing sequence
*/
QuickLink.textSearch = function(e) {
var evt = (e) ? e : window.event;
if(evt.ctrlKey && evt.keyCode == 32) {
QuickLink.inputField.focus();
}
QuickLink.caret = SearchCaret( this );
if(QuickLink.linkStart<0 || QuickLink.caret < QuickLink.linkStart) {
if ( this.value.charAt(QuickLink.caret-1)=='[' && this.value.charAt(QuickLink.caret-2)=='[') {
if ( QuickLink.lastKey == 39 && evt.keyCode == 39) {
// Navigating through the source with cursors- no QuickLink!
QuickLink.resetSearchBox();
QuickLink.lastKey = evt.keyCode;
} else {
QuickLink.linkStart = QuickLink.caret;
}
} else {
QuickLink.resetSearchBox();
QuickLink.lastKey = evt.keyCode;
}
}
else {
QuickLink.initSearchBox();
var searchString = this.value.substr(QuickLink.linkStart,QuickLink.caret-QuickLink.linkStart);
//caretxy = vsk_frm_cursor_offset(QuickLink.textarea);
//console.log(caretxy);
//QuickLink.searchBox.style.position = 'absolute';
//QuickLink.searchBox.style.top = caretxy.y + this.offsetTop + "px";
//QuickLink.searchBox.style.left = caretxy.x + this.offsetLeft + "px";
QuickLink.inputField.value = searchString;
QuickLink.searchCall(searchString);
}
}
/*
Key capture method for the textarea
*/
QuickLink.captureKeys = function(e) {
var evt = (e) ? e : window.event;
var code = evt.keyCode ? evt.keyCode : evt.charCode ? evt.charCode : evt.which ? evt.which : void 0;
if(QuickLink.linkStart>0) {
switch(code) {
// space
case 32:
break;
// left
case 37:
break;
// up
case 38:
break;
// right
case 39:
break;
// down
case 40:
break;
// enter
case 13:
QuickLink.insertSelectedResult();
break;
// escape
case 27:
QuickLink.resetLinkAndCaret(2);
break;
}
//e.cancelBubble=true;
//e.stopPropagation()
}
}
QuickLink.initSearchBox = function() {
QuickLink.searchBox.style.visibility = 'visible';
QuickLink.lastSelectedItem = -1;
}
/*
OnKeyDown: escape
IE: escape sets the caret to the end of the textarea
*/
QuickLink.resetLinkAndCaret = function(offSet) {
// remove link
var LinkStart = null;
if (offSet == 0) {
//nothing written to the textarea!
LinkStart = QuickLink.caret;
} else {
LinkStart = QuickLink.caret - QuickLink.inputField.value.length - offSet;
QuickLink.textarea.value = QuickLink.textarea.value.substr (0, LinkStart ) + QuickLink.textarea.value.substr( LinkStart + offSet + QuickLink.inputField.value.length );
}
// set caret back to the beginning position
QuickLink.setCaret(LinkStart);
QuickLink.resetSearchBox();
}
QuickLink.setCaret = function(caretPos) {
QuickLink.textarea.focus();
if(QuickLink.textarea.setSelectionRange) {
// FF
QuickLink.textarea.setSelectionRange(caretPos,caretPos);
} else if (QuickLink.textarea.createTextRange) {
// IE - counts line wraps
if( QuickLink.linkStart>0 ) {
// triggered by '[['
var dummy_textarea = QuickLink.textarea.value.substr( 0, QuickLink.linkStart - 2 );
if ( QuickLink.lastLink != null ) {
dummy_textarea = dummy_textarea + '[[' + QuickLink.lastLink + ']]';
}
} else {
var dummy_textarea = QuickLink.textarea.value.substr( 0, QuickLink.caret );
}
caretPos = dummy_textarea.replace(/\r\n/g,' ').length;
window.setTimeout( 'QuickLink.setCaretIE(' + caretPos + ');', 10);
}
}
QuickLink.setCaretIE = function(caretPos) {
var range = document.selection.createRange();
var stored_range = range.duplicate();
stored_range.moveToElementText( QuickLink.textarea );
stored_range.collapse(true);
stored_range.moveStart( 'character', caretPos );
stored_range.moveEnd( 'character', 0 );
stored_range.select();
}
QuickLink.resetSearchBox = function() {
QuickLink.inputField.value = '';
QuickLink.searchBox.style.visibility = 'hidden';
QuickLink.linkStart = -1;
QuickLink.lastSelectedItem = -1;
QuickLink.lastLink = null;
}
QuickLink.selectResult = function(item) {
// if QuickLink.lastSelectedItem < 0 then notihng was selected
if(QuickLink.lastSelectedItem >= 0)
if(QuickLink.searchBox.getElementsByTagName('a').item(QuickLink.lastSelectedItem))
QuickLink.searchBox.getElementsByTagName('a')[QuickLink.lastSelectedItem].className = 'unselected';
// select an item only if item > -1
// if item is out of range, QuickLink.lastSelectedItem = -1
if(item >= 0)
if(QuickLink.searchBox.getElementsByTagName('a').item(item)) {
QuickLink.searchBox.getElementsByTagName('a')[item].className = 'selected';
QuickLink.lastSelectedItem = item;
}
else {
QuickLink.lastSelectedItem = -1;
}
}
QuickLink.insertSelectedResult = function() {
var selectedResult = QuickLink.searchBox.getElementsByTagName('a').item(QuickLink.lastSelectedItem);
if(selectedResult)
selectedResult.onclick();
}
QuickLink.selectNextResult = function() {
var max = QuickLink.searchBox.getElementsByTagName('a').length;
if(QuickLink.lastSelectedItem < max-1) {
QuickLink.selectResult(QuickLink.lastSelectedItem+1);
}
}
QuickLink.selectPreviousResult = function() {
if(QuickLink.lastSelectedItem > 0) {
QuickLink.selectResult(QuickLink.lastSelectedItem-1);
}
}
