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[mwEditButtons.length] =
   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                 return false;
  33         };
  34
  35         parent.appendChild(image);
  36         return true;
  37 }
  38
  39 function mwSetupToolbar() {
  40         var toolbar = document.getElementById('toolbar');
  41         if (!toolbar) { return false; }
  42
  43         var textbox = document.getElementById('wpTextbox1');
  44         if (!textbox) { return false; }
  45
  46         // Don't generate buttons for browsers which don't fully
  47         // support it.
  48         if (!(document.selection && document.selection.createRange)
  49                 && textbox.selectionStart === null) {
  50                 return false;
  51         }
  52
  53         for (var i = 0; i < mwEditButtons.length; i++) {
  54                 mwInsertEditButton(toolbar, mwEditButtons[i]);
  55         }
  56         for (var i = 0; i < mwCustomEditButtons.length; i++) {
  57                 mwInsertEditButton(toolbar, mwCustomEditButtons[i]);
  58         }
  59         return true;
  60 }
  61
  62 // apply tagOpen/tagClose to selection in textarea,
  63 // use sampleText instead of selection if there is none
  64 function insertTags(tagOpen, tagClose, sampleText) {
  65         var txtarea;
  66         if (document.editform) {
  67                 txtarea = currentFocused;
  68         } else {
  69                 // some alternate form? take the first one we can find
  70                 var areas = document.getElementsByTagName('textarea');
  71                 txtarea = areas[0];
  72         }
  73         var selText, isSample = false;
  74
  75         if (document.selection  && document.selection.createRange) { // IE/Opera
  76
  77                 //save window scroll position
  78                 if (document.documentElement && document.documentElement.scrollTop)
  79                         var winScroll = document.documentElement.scrollTop
  80                 else if (document.body)
  81                         var winScroll = document.body.scrollTop;
  82                 //get current selection
  83                 txtarea.focus();
  84                 var range = document.selection.createRange();
  85                 selText = range.text;
  86                 //insert tags
  87                 checkSelectedText();
  88                 range.text = tagOpen + selText + tagClose;
  89                 //mark sample text as selected
  90                 if (isSample && range.moveStart) {
  91                         if (window.opera)
  92                                 tagClose = tagClose.replace(/\n/g,'');
  93                         range.moveStart('character', - tagClose.length - selText.length);
  94                         range.moveEnd('character', - tagClose.length);
  95                 }
  96                 range.select();
  97                 //restore window scroll position
  98                 if (document.documentElement && document.documentElement.scrollTop)
  99                         document.documentElement.scrollTop = winScroll
 100                 else if (document.body)
 101                         document.body.scrollTop = winScroll;
 102
 103         } else if (txtarea.selectionStart || txtarea.selectionStart == '0') { // Mozilla
 104
 105                 //save textarea scroll position
 106                 var textScroll = txtarea.scrollTop;
 107                 //get current selection
 108                 txtarea.focus();
 109                 var startPos = txtarea.selectionStart;
 110                 var endPos = txtarea.selectionEnd;
 111                 selText = txtarea.value.substring(startPos, endPos);
 112                 //insert tags
 113                 checkSelectedText();
 114                 txtarea.value = txtarea.value.substring(0, startPos)
 115                         + tagOpen + selText + tagClose
 116                         + txtarea.value.substring(endPos, txtarea.value.length);
 117                 //set new selection
 118                 if (isSample) {
 119                         txtarea.selectionStart = startPos + tagOpen.length;
 120                         txtarea.selectionEnd = startPos + tagOpen.length + selText.length;
 121                 } else {
 122                         txtarea.selectionStart = startPos + tagOpen.length + selText.length + tagClose.length;
 123                         txtarea.selectionEnd = txtarea.selectionStart;
 124                 }
 125                 //restore textarea scroll position
 126                 txtarea.scrollTop = textScroll;
 127         }
 128
 129         function checkSelectedText(){
 130                 if (!selText) {
 131                         selText = sampleText;
 132                         isSample = true;
 133                 } else if (selText.charAt(selText.length - 1) == ' ') { //exclude ending space char
 134                         selText = selText.substring(0, selText.length - 1);
 135                         tagClose += ' '
 136                 }
 137         }
 138
 139 }
 140
 141 /**
 142  * Restore the edit box scroll state following a preview operation,
 143  * and set up a form submission handler to remember this state
 144  */
 145 function scrollEditBox() {
 146         var editBox = document.getElementById( 'wpTextbox1' );
 147         var scrollTop = document.getElementById( 'wpScrolltop' );
 148         var editForm = document.getElementById( 'editform' );
 149         if( editForm && editBox && scrollTop ) {
 150                 if( scrollTop.value )
 151                         editBox.scrollTop = scrollTop.value;
 152                 addHandler( editForm, 'submit', function() {
 153                         alert(1);
 154                         document.getElementById( 'wpScrolltop' ).value = document.getElementById( 'wpTextbox1' ).scrollTop;
 155                 } );
 156         }
 157 }
 158 hookEvent( 'load', scrollEditBox );
 159 hookEvent( 'load', mwSetupToolbar );
 160 hookEvent( 'load', function() {
 161         if ( document.editform ) {
 162                 currentFocused = document.editform.wpTextbox1;
 163                 document.editform.wpTextbox1.onfocus = function() { currentFocused = document.editform.wpTextbox1; };
 164                 document.editform.wpSummary.onfocus = function() { currentFocused = document.editform.wpSummary; };
 165         }
 166 } );
 167