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205 lines (184 loc) · 7.01 KB
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/**
* The DokuWiki editor features
*
* These are the advanced features of the editor. It does NOT contain any
* code for the toolbar buttons and it functions. See toolbar.js for that.
*/
var dw_editor = {
/**
* initialize the default editor functionality
*
* All other functions can also be called separately for non-default
* textareas
*/
init: function(){
var $editor = jQuery('#wiki__text');
if($editor.length === 0) {
return;
}
dw_editor.initSizeCtl('#size__ctl',$editor);
if($editor.attr('readOnly')) {
return;
}
// in Firefox, keypress doesn't send the correct keycodes,
// in Opera, the default of keydown can't be prevented
if (jQuery.browser.opera) {
$editor.keypress(dw_editor.keyHandler);
} else {
$editor.keydown(dw_editor.keyHandler);
}
},
/**
* Add the edit window size and wrap controls
*
* Initial values are read from cookie if it exists
*
* @param selector ctlarea the div to place the controls
* @param selector editor the textarea to control
*/
initSizeCtl: function(ctlarea,editor){
var $ctl = jQuery(ctlarea),
$textarea = jQuery(editor);
if($ctl.length === 0 || $textarea.length === 0) {
return;
}
$textarea.css('height', DokuCookie.getValue('sizeCtl') || '300px');
var wrp = DokuCookie.getValue('wrapCtl');
if(wrp){
dw_editor.setWrap($textarea[0], wrp);
} // else use default value
jQuery.each([
['larger', function(){dw_editor.sizeCtl(editor,100);}],
['smaller', function(){dw_editor.sizeCtl(editor,-100);}],
['wrap', function(){dw_editor.toggleWrap(editor);}]
], function (_, img) {
jQuery(document.createElement('IMG'))
.attr('src', DOKU_BASE+'lib/images/' + img[0] + '.gif')
.attr('alt', '')
.click(img[1])
.appendTo($ctl);
});
},
/**
* This sets the vertical size of the editbox and adjusts the cookie
*
* @param selector editor the textarea to control
* @param int val the relative value to resize in pixel
*/
sizeCtl: function(editor,val){
var $textarea = jQuery(editor),
height = parseInt($textarea.css('height')) + val;
$textarea.css('height', height+'px');
DokuCookie.setValue('sizeCtl',$textarea.css('height'));
},
/**
* Toggle the wrapping mode of the editor textarea and adjusts the
* cookie
*
* @param selector editor the textarea to control
*/
toggleWrap: function(editor){
var $textarea = jQuery(editor),
wrap = $textarea.attr('wrap');
dw_editor.setWrap($textarea[0],
(wrap && wrap.toLowerCase() == 'off') ? 'soft' : 'off');
DokuCookie.setValue('wrapCtl',$textarea.attr('wrap'));
},
/**
* Set the wrapping mode of a textarea
*
* @author Fluffy Convict <fluffyconvict@hotmail.com>
* @author <shutdown@flashmail.com>
* @link http://news.hping.org/comp.lang.javascript.archive/12265.html
* @link https://bugzilla.mozilla.org/show_bug.cgi?id=41464
* @param DomObject textarea
* @param string wrapAttrValue
*/
setWrap: function(textarea, wrapAttrValue){
textarea.setAttribute('wrap', wrapAttrValue);
// Fix display for mozilla
var parNod = textarea.parentNode;
var nxtSib = textarea.nextSibling;
parNod.removeChild(textarea);
parNod.insertBefore(textarea, nxtSib);
},
/**
* Make intended formattings easier to handle
*
* Listens to all key inputs and handle indentions
* of lists and code blocks
*
* Currently handles space, backspce and enter presses
*
* @author Andreas Gohr <andi@splitbrain.org>
* @fixme handle tabs
* @param event e - the key press event object
*/
keyHandler: function(e){
if(jQuery.inArray(e.keyCode,[8, 13, 32]) === -1) {
return;
}
var selection = getSelection(this);
if(selection.getLength() > 0) {
return; //there was text selected, keep standard behavior
}
var search = "\n"+this.value.substr(0,selection.start);
var linestart = Math.max(search.lastIndexOf("\n"),
search.lastIndexOf("\r")); //IE workaround
search = search.substr(linestart);
if(e.keyCode == 13){ // Enter
// keep current indention for lists and code
var match = search.match(/(\n +([\*-] ?)?)/);
if(match){
var scroll = this.scrollHeight;
var match2 = search.match(/^\n +[\*-]\s*$/);
// Cancel list if the last item is empty (i. e. two times enter)
if (match2 && this.value.substr(selection.start).match(/^($|\r?\n)/)) {
this.value = this.value.substr(0, linestart) + "\n" +
this.value.substr(selection.start);
selection.start = linestart + 1;
selection.end = linestart + 1;
setSelection(selection);
} else {
insertAtCarret(this.id,match[1]);
}
this.scrollTop += (this.scrollHeight - scroll);
e.preventDefault(); // prevent enter key
return false;
}
}else if(e.keyCode == 8){ // Backspace
// unindent lists
var match = search.match(/(\n +)([*-] ?)$/);
if(match){
var spaces = match[1].length-1;
if(spaces > 3){ // unindent one level
this.value = this.value.substr(0,linestart)+
this.value.substr(linestart+2);
selection.start = selection.start - 2;
selection.end = selection.start;
}else{ // delete list point
this.value = this.value.substr(0,linestart)+
this.value.substr(selection.start);
selection.start = linestart;
selection.end = linestart;
}
setSelection(selection);
e.preventDefault(); // prevent backspace
return false;
}
}else if(e.keyCode == 32){ // Space
// intend list item
var match = search.match(/(\n +)([*-] )$/);
if(match){
this.value = this.value.substr(0,linestart)+' '+
this.value.substr(linestart);
selection.start = selection.start + 2;
selection.end = selection.start;
setSelection(selection);
e.preventDefault(); // prevent space
return false;
}
}
}
};
jQuery(dw_editor.init);