skins/common/edit.js

   1 var currentFocused;
   2
   3 // this function generates the actual toolbar buttons with localized text
   4 // we use it to avoid creating the toolbar where javascript is not enabled
   5 function addButton(imageFile, speedTip, tagOpen, tagClose, sampleText, imageId) {
   6         // Don't generate buttons for browsers which don't fully
   7         // support it.
   8         mwEditButtons.push(
   9                 {"imageId": imageId,
  10                  "imageFile": imageFile,
  11                  "speedTip": speedTip,
  12                  "tagOpen": tagOpen,
  13                  "tagClose": tagClose,
  14                  "sampleText": sampleText});
  15 }
  16
  17 // this function generates the actual toolbar buttons with localized text
  18 // we use it to avoid creating the toolbar where javascript is not enabled
  19 function mwInsertEditButton(parent, item) {
  20         var image = document.createElement("img");
  21         image.width = 23;
  22         image.height = 22;
  23         image.className = "mw-toolbar-editbutton";
  24         if (item.imageId) image.id = item.imageId;
  25         image.src = item.imageFile;
  26         image.border = 0;
  27         image.alt = item.speedTip;
  28         image.title = item.speedTip;
  29         image.style.cursor = "pointer";
  30         image.onclick = function() {
  31                 insertTags(item.tagOpen, item.tagClose, item.sampleText);
  32                 //click tracking
  33                 if ( ( $j != undefined )  &&  ( $j.trackAction != undefined ) ) {
  34                         $j.trackAction("oldedit." + item.speedTip.replace(/ /g, "-"));
  35                 }
  36                 return false;
  37         };
  38
  39         parent.appendChild(image);
  40         return true;
  41 }
  42
  43 function mwSetupToolbar() {
  44         var toolbar = document.getElementById('toolbar');
  45         if (!toolbar) { return false; }
  46
  47         // Don't generate buttons for browsers which don't fully
  48         // support it.
  49         var textbox = document.createElement('textarea'); // abstract, don't assume wpTextbox1 is always there
  50         if (!(document.selection && document.selection.createRange)
  51                 && textbox.selectionStart === null) {
  52                 return false;
  53         }
  54
  55         for (var i = 0; i < mwEditButtons.length; i++) {
  56                 mwInsertEditButton(toolbar, mwEditButtons[i]);
  57         }
  58         for (var i = 0; i < mwCustomEditButtons.length; i++) {
  59                 mwInsertEditButton(toolbar, mwCustomEditButtons[i]);
  60         }
  61         return true;
  62 }
  63
  64 // apply tagOpen/tagClose to selection in textarea,
  65 // use sampleText instead of selection if there is none
  66 function insertTags(tagOpen, tagClose, sampleText) {
  67         var txtarea;
  68         if (document.editform) {
  69                 txtarea = currentFocused;
  70         } else {
  71                 // some alternate form? take the first one we can find
  72                 var areas = document.getElementsByTagName('textarea');
  73                 txtarea = areas[0];
  74         }
  75         var selText, isSample = false;
  76
  77         if (document.selection  && document.selection.createRange) { // IE/Opera
  78
  79                 //save window scroll position
  80                 if (document.documentElement && document.documentElement.scrollTop)
  81                         var winScroll = document.documentElement.scrollTop
  82                 else if (document.body)
  83                         var winScroll = document.body.scrollTop;
  84                 //get current selection
  85                 txtarea.focus();
  86                 var range = document.selection.createRange();
  87                 selText = range.text;
  88                 //insert tags
  89                 checkSelectedText();
  90                 range.text = tagOpen + selText + tagClose;
  91                 //mark sample text as selected
  92                 if (isSample && range.moveStart) {
  93                         if (window.opera)
  94                                 tagClose = tagClose.replace(/\n/g,'');
  95                         range.moveStart('character', - tagClose.length - selText.length);
  96                         range.moveEnd('character', - tagClose.length);
  97                 }
  98                 range.select();
  99                 //restore window scroll position
 100                 if (document.documentElement && document.documentElement.scrollTop)
 101                         document.documentElement.scrollTop = winScroll
 102                 else if (document.body)
 103                         document.body.scrollTop = winScroll;
 104
 105         } else if (txtarea.selectionStart || txtarea.selectionStart == '0') { // Mozilla
 106
 107                 //save textarea scroll position
 108                 var textScroll = txtarea.scrollTop;
 109                 //get current selection
 110                 txtarea.focus();
 111                 var startPos = txtarea.selectionStart;
 112                 var endPos = txtarea.selectionEnd;
 113                 selText = txtarea.value.substring(startPos, endPos);
 114                 //insert tags
 115                 checkSelectedText();
 116                 txtarea.value = txtarea.value.substring(0, startPos)
 117                         + tagOpen + selText + tagClose
 118                         + txtarea.value.substring(endPos, txtarea.value.length);
 119                 //set new selection
 120                 if (isSample) {
 121                         txtarea.selectionStart = startPos + tagOpen.length;
 122                         txtarea.selectionEnd = startPos + tagOpen.length + selText.length;
 123                 } else {
 124                         txtarea.selectionStart = startPos + tagOpen.length + selText.length + tagClose.length;
 125                         txtarea.selectionEnd = txtarea.selectionStart;
 126                 }
 127                 //restore textarea scroll position
 128                 txtarea.scrollTop = textScroll;
 129         }
 130
 131         function checkSelectedText(){
 132                 if (!selText) {
 133                         selText = sampleText;
 134                         isSample = true;
 135                 } else if (selText.charAt(selText.length - 1) == ' ') { //exclude ending space char
 136                         selText = selText.substring(0, selText.length - 1);
 137                         tagClose += ' '
 138                 }
 139         }
 140
 141 }
 142
 143 /**
 144  * Restore the edit box scroll state following a preview operation,
 145  * and set up a form submission handler to remember this state
 146  */
 147 function scrollEditBox() {
 148         var editBox = document.getElementById( 'wpTextbox1' );
 149         var scrollTop = document.getElementById( 'wpScrolltop' );
 150         var editForm = document.getElementById( 'editform' );
 151         if( editForm && editBox && scrollTop ) {
 152                 if( scrollTop.value )
 153                         editBox.scrollTop = scrollTop.value;
 154                 addHandler( editForm, 'submit', function() {
 155                         scrollTop.value = editBox.scrollTop;
 156                 } );
 157         }
 158 }
 159 hookEvent( 'load', scrollEditBox );
 160 hookEvent( 'load', mwSetupToolbar );
 161 hookEvent( 'load', function() {
 162         currentFocused = document.getElementById( 'wpTextbox1' );
 163 } );
 164