1 files changed, 156 insertions, 0 deletions
diff --git a/skins/common/edit.js b/skins/common/edit.js
new file mode 100644
index 00000000..945059e0
--- /dev/null
+++ b/skins/common/edit.js
@@ -0,0 +1,156 @@
+// this function generates the actual toolbar buttons with localized text
+// we use it to avoid creating the toolbar where javascript is not enabled
+function addButton(imageFile, speedTip, tagOpen, tagClose, sampleText, imageId) {
+	// Don't generate buttons for browsers which don't fully
+	// support it.
+	mwEditButtons[mwEditButtons.length] =
+		{"imageId": imageId,
+		 "imageFile": imageFile,
+		 "speedTip": speedTip,
+		 "tagOpen": tagOpen,
+		 "tagClose": tagClose,
+		 "sampleText": sampleText};
+}
+
+// this function generates the actual toolbar buttons with localized text
+// we use it to avoid creating the toolbar where javascript is not enabled
+function mwInsertEditButton(parent, item) {
+	var image = document.createElement("img");
+	image.width = 23;
+	image.height = 22;
+	image.className = "mw-toolbar-editbutton";
+	if (item.imageId) image.id = item.imageId;
+	image.src = item.imageFile;
+	image.border = 0;
+	image.alt = item.speedTip;
+	image.title = item.speedTip;
+	image.style.cursor = "pointer";
+	image.onclick = function() {
+		insertTags(item.tagOpen, item.tagClose, item.sampleText);
+		return false;
+	};
+
+	parent.appendChild(image);
+	return true;
+}
+
+function mwSetupToolbar() {
+	var toolbar = document.getElementById('toolbar');
+	if (!toolbar) { return false; }
+
+	var textbox = document.getElementById('wpTextbox1');
+	if (!textbox) { return false; }
+
+	// Don't generate buttons for browsers which don't fully
+	// support it.
+	if (!(document.selection && document.selection.createRange)
+		&& textbox.selectionStart === null) {
+		return false;
+	}
+
+	for (var i = 0; i < mwEditButtons.length; i++) {
+		mwInsertEditButton(toolbar, mwEditButtons[i]);
+	}
+	for (var i = 0; i < mwCustomEditButtons.length; i++) {
+		mwInsertEditButton(toolbar, mwCustomEditButtons[i]);
+	}
+	return true;
+}
+
+// apply tagOpen/tagClose to selection in textarea,
+// use sampleText instead of selection if there is none
+function insertTags(tagOpen, tagClose, sampleText) {
+	var txtarea;
+	if (document.editform) {
+		txtarea = document.editform.wpTextbox1;
+	} else {
+		// some alternate form? take the first one we can find
+		var areas = document.getElementsByTagName('textarea');
+		txtarea = areas[0];
+	}
+	var selText, isSample = false;
+
+	if (document.selection  && document.selection.createRange) { // IE/Opera
+
+		//save window scroll position
+		if (document.documentElement && document.documentElement.scrollTop)
+			var winScroll = document.documentElement.scrollTop
+		else if (document.body)
+			var winScroll = document.body.scrollTop;
+		//get current selection  
+		txtarea.focus();
+		var range = document.selection.createRange();
+		selText = range.text;
+		//insert tags
+		checkSelectedText();
+		range.text = tagOpen + selText + tagClose;
+		//mark sample text as selected
+		if (isSample && range.moveStart) {
+			if (window.opera)
+				tagClose = tagClose.replace(/\n/g,'');
+			range.moveStart('character', - tagClose.length - selText.length); 
+			range.moveEnd('character', - tagClose.length); 
+		}
+		range.select();   
+		//restore window scroll position
+		if (document.documentElement && document.documentElement.scrollTop)
+			document.documentElement.scrollTop = winScroll
+		else if (document.body)
+			document.body.scrollTop = winScroll;
+
+	} else if (txtarea.selectionStart || txtarea.selectionStart == '0') { // Mozilla
+
+		//save textarea scroll position
+		var textScroll = txtarea.scrollTop;
+		//get current selection
+		txtarea.focus();
+		var startPos = txtarea.selectionStart;
+		var endPos = txtarea.selectionEnd;
+		selText = txtarea.value.substring(startPos, endPos);
+		//insert tags
+		checkSelectedText();
+		txtarea.value = txtarea.value.substring(0, startPos)
+			+ tagOpen + selText + tagClose
+			+ txtarea.value.substring(endPos, txtarea.value.length);
+		//set new selection
+		if (isSample) {
+			txtarea.selectionStart = startPos + tagOpen.length;
+			txtarea.selectionEnd = startPos + tagOpen.length + selText.length;
+		} else {
+			txtarea.selectionStart = startPos + tagOpen.length + selText.length + tagClose.length;
+			txtarea.selectionEnd = txtarea.selectionStart;
+		}
+		//restore textarea scroll position
+		txtarea.scrollTop = textScroll;
+	} 
+
+	function checkSelectedText(){
+		if (!selText) {
+			selText = sampleText;
+			isSample = true;
+		} else if (selText.charAt(selText.length - 1) == ' ') { //exclude ending space char
+			selText = selText.substring(0, selText.length - 1);
+			tagClose += ' '
+		} 
+	}
+
+}
+
+/**
+ * Restore the edit box scroll state following a preview operation,
+ * and set up a form submission handler to remember this state
+ */
+function scrollEditBox() {
+	var editBox = document.getElementById( 'wpTextbox1' );
+	var scrollTop = document.getElementById( 'wpScrolltop' );
+	var editForm = document.getElementById( 'editform' );
+	if( editBox && scrollTop ) {
+		if( scrollTop.value )
+			editBox.scrollTop = scrollTop.value;
+		addHandler( editForm, 'submit', function() {
+			document.getElementById( 'wpScrolltop' ).value = document.getElementById( 'wpTextbox1' ).scrollTop; 
+		} );
+	}
+}
+hookEvent( 'load', scrollEditBox );
+hookEvent( 'load', mwSetupToolbar );