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Diffstat (limited to 'lib/scripts/editor.js')
| -rw-r--r-- | lib/scripts/editor.js | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/lib/scripts/editor.js b/lib/scripts/editor.js new file mode 100644 index 000000000..2009ce6af --- /dev/null +++ b/lib/scripts/editor.js @@ -0,0 +1,204 @@ +/** + * 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') + .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',$textarea.attr('wrap')); + }, + + /** + * Set the wrapping mode of a textarea + * + * @author Fluffy Convict <fluffyconvict@hotmail.com> + * @author <shutdown@flashmail.com> + * @link http://news.hping.org/comp.lang.javascript.archive/12265.html + * @link https://bugzilla.mozilla.org/show_bug.cgi?id=41464 + * @param DomObject textarea + * @param string wrapAttrValue + */ + setWrap: function(textarea, wrapAttrValue){ + textarea.setAttribute('wrap', wrapAttrValue); + + // Fix display for mozilla + var parNod = textarea.parentNode; + var nxtSib = textarea.nextSibling; + parNod.removeChild(textarea); + parNod.insertBefore(textarea, nxtSib); + }, + + /** + * Make intended formattings easier to handle + * + * Listens to all key inputs and handle indentions + * of lists and code blocks + * + * Currently handles space, backspce and enter presses + * + * @author Andreas Gohr <andi@splitbrain.org> + * @fixme handle tabs + * @param event e - the key press event object + */ + keyHandler: function(e){ + if([8, 13, 32].indexOf(e.keyCode) === -1) { + return; + } + var selection = getSelection(this); + if(selection.getLength() > 0) { + return; //there was text selected, keep standard behavior + } + var search = "\n"+this.value.substr(0,selection.start); + var linestart = Math.max(search.lastIndexOf("\n"), + search.lastIndexOf("\r")); //IE workaround + search = search.substr(linestart); + + if(e.keyCode == 13){ // Enter + // keep current indention for lists and code + var match = search.match(/(\n +([\*-] ?)?)/); + if(match){ + var scroll = this.scrollHeight; + var match2 = search.match(/^\n +[\*-]\s*$/); + // 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); |