From 135156cea58dbbf20ec666f0128704e709b36eb7 Mon Sep 17 00:00:00 2001
From: Eston Bond <eston@github.com>
Date: Wed, 27 Oct 2010 17:29:11 -0700
Subject: [PATCH] Adding code replacement techniques

---
 scratch/js/gollum.editor.js         | 75 ++++++++++++++++++++++++--
 scratch/js/jquery.fieldselection.js | 83 +++++++++++++++++++++++++++++
 2 files changed, 155 insertions(+), 3 deletions(-)
 create mode 100644 scratch/js/jquery.fieldselection.js

diff --git a/scratch/js/gollum.editor.js b/scratch/js/gollum.editor.js
index 1844199f..299b05e4 100644
--- a/scratch/js/gollum.editor.js
+++ b/scratch/js/gollum.editor.js
@@ -83,6 +83,7 @@
   **/
   var LanguageDefinition = {
      
+    _ACTIVE_LANG: '',
     _LOADED_LANGS: [],
     _LANG: {},
     
@@ -91,8 +92,32 @@
      **/
     define: function( name, definitionObject ) {
       LanguageDefinition._LANG[name] = definitionObject;
+      LanguageDefinition._ACTIVE_LANG = name;
     },
     
+    
+    /**
+     *  gets a definition object for a specified attribute
+     *  
+     *  @param  string  attr    The specified attribute.
+     *  @param  string  specified_lang  The language to pull a definition for.
+     *  @return object if exists, null otherwise
+    **/
+    getDefinitionFor: function( attr, specified_lang ) {
+      if ( !specified_lang ) {
+        specified_lang = LanguageDefinition._ACTIVE_LANG;
+      }
+      
+      if ( LanguageDefinition.isLoadedFor(specified_lang) &&
+           LanguageDefinition._LANG[specified_lang][attr] && 
+           typeof LanguageDefinition_LANG[specified_lang][attr] == 'object' ) {
+        return LanguageDefinition._LANG[specified_lang][attr];
+      }
+      
+      return null;
+    },
+    
+    
     /**
      *  loadFor
      *  Asynchronously loads a definition file for the current markup.
@@ -174,14 +199,58 @@
           .click(FunctionBar.evtFunctionButtonClick);
         // show bar as active
         $('#gollum-editor-function-bar').addClass('active');
-        this.isActive = true;
+        FunctionBar.isActive = true;
       },
       
       evtFunctionButtonClick: function(e) {
         e.preventDefault();
-        alert($(this).attr('id'));
-      }
+        var def = LanguageDefinition.getDefinitionFor( $(this).attr() );
+        if ( def ) {
+          FunctionBar.executeAction( def );
+        }
+      },
       
+      executeAction: function( definitionObject ) {
+        // get the selected text from the textarea
+        var txt = $('#gollum-editor-body').val();
+        // hmm, I'm not sure this will work in a textarea
+        var selText = $('#gollum-editor-body').getSelection();
+        var repText = null;
+        
+        // exec a function if it exists first             
+        if ( definitionObject.exec &&
+             typeof definitionObject.exec == 'function' ) {
+          definitionObject(txt, selText, $('#gollum-editor-body'));
+        }
+        
+        // exec search/replace if both exist
+        if ( definitionObject.replace &&
+             typeof definitionObject.replace == 'string' ) {
+        
+          var searchRegex = /(.*)/gi;
+          if ( definitionObject.search &&
+               ( typeof definitionObject.search == 'string' ||
+                 typeof definitionObject.search == 'regexp' )) {
+            searchRegex = definitionObject.search;
+          } else {
+            debug('Invalid search regex, using default');
+          }
+          
+          repText = selText.replace(searchRegex, definitionObject.replace);
+        } else {
+          debug('Invalid replacement string');
+        }
+        
+        // now, add append if it exists
+        if ( definitionObject.append &&
+             typeof definitionObject.append == 'string' ) {
+          repText += definitionObject.append;
+        }
+        
+        if (repText)
+          $('#gollum-editor-body').replaceSelection(repText);
+        
+      } 
    };
   
 /* })(jQuery); */
diff --git a/scratch/js/jquery.fieldselection.js b/scratch/js/jquery.fieldselection.js
new file mode 100644
index 00000000..92fb6562
--- /dev/null
+++ b/scratch/js/jquery.fieldselection.js
@@ -0,0 +1,83 @@
+/*
+ * jQuery plugin: fieldSelection - v0.1.0 - last change: 2006-12-16
+ * (c) 2006 Alex Brem <alex@0xab.cd> - http://blog.0xab.cd
+ */
+
+(function() {
+
+	var fieldSelection = {
+
+		getSelection: function() {
+
+			var e = this.jquery ? this[0] : this;
+
+			return (
+
+				/* mozilla / dom 3.0 */
+				('selectionStart' in e && function() {
+					var l = e.selectionEnd - e.selectionStart;
+					return { start: e.selectionStart, end: e.selectionEnd, length: l, text: e.value.substr(e.selectionStart, l) };
+				}) ||
+
+				/* exploder */
+				(document.selection && function() {
+
+					e.focus();
+
+					var r = document.selection.createRange();
+					if (r == null) {
+						return { start: 0, end: e.value.length, length: 0 }
+					}
+
+					var re = e.createTextRange();
+					var rc = re.duplicate();
+					re.moveToBookmark(r.getBookmark());
+					rc.setEndPoint('EndToStart', re);
+
+					return { start: rc.text.length, end: rc.text.length + r.text.length, length: r.text.length, text: r.text };
+				}) ||
+
+				/* browser not supported */
+				function() {
+					return { start: 0, end: e.value.length, length: 0 };
+				}
+
+			)();
+
+		},
+
+		replaceSelection: function() {
+
+			var e = this.jquery ? this[0] : this;
+			var text = arguments[0] || '';
+
+			return (
+
+				/* mozilla / dom 3.0 */
+				('selectionStart' in e && function() {
+					e.value = e.value.substr(0, e.selectionStart) + text + e.value.substr(e.selectionEnd, e.value.length);
+					return this;
+				}) ||
+
+				/* exploder */
+				(document.selection && function() {
+					e.focus();
+					document.selection.createRange().text = text;
+					return this;
+				}) ||
+
+				/* browser not supported */
+				function() {
+					e.value += text;
+					return this;
+				}
+
+			)();
+
+		}
+
+	};
+
+	jQuery.each(fieldSelection, function(i) { jQuery.fn[i] = this; });
+
+})();
\ No newline at end of file