1 files changed, 88 insertions, 0 deletions
diff --git a/infrastructure/ace/www/cssmanager.js b/infrastructure/ace/www/cssmanager.js
new file mode 100644
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+++ b/infrastructure/ace/www/cssmanager.js
@@ -0,0 +1,88 @@
+
+
+/**
+ * Copyright 2009 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS-IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+function makeCSSManager(emptyStylesheetTitle) {
+
+  function getSheetByTitle(title) {
+    var allSheets = document.styleSheets;
+    for(var i=0;i<allSheets.length;i++) {
+      var s = allSheets[i];
+      if (s.title == title) {
+	return s;
+      }
+    }
+    return null;
+  }
+
+  /*function getSheetTagByTitle(title) {
+    var allStyleTags = document.getElementsByTagName("style");
+    for(var i=0;i<allStyleTags.length;i++) {
+      var t = allStyleTags[i];
+      if (t.title == title) {
+	return t;
+      }
+    }
+    return null;
+  }*/
+
+  var browserSheet = getSheetByTitle(emptyStylesheetTitle);
+  //var browserTag = getSheetTagByTitle(emptyStylesheetTitle);
+  function browserRules() { return (browserSheet.cssRules || browserSheet.rules); }
+  function browserDeleteRule(i) {
+    if (browserSheet.deleteRule) browserSheet.deleteRule(i);
+    else browserSheet.removeRule(i);
+  }
+  function browserInsertRule(i, selector) {
+    if (browserSheet.insertRule) browserSheet.insertRule(selector+' {}', i);
+    else browserSheet.addRule(selector, null, i);
+  }
+  var selectorList = [];
+
+  function indexOfSelector(selector) {
+    for(var i=0;i<selectorList.length;i++) {
+      if (selectorList[i] == selector) {
+	return i;
+      }
+    }
+    return -1;
+  }
+
+  function selectorStyle(selector) {
+    var i = indexOfSelector(selector);
+    if (i < 0) {
+      // add selector
+      browserInsertRule(0, selector);
+      selectorList.splice(0, 0, selector);
+      i = 0;
+    }
+    return browserRules().item(i).style;
+  }
+
+  function removeSelectorStyle(selector) {
+    var i = indexOfSelector(selector);
+    if (i >= 0) {
+      browserDeleteRule(i);
+      selectorList.splice(i, 1);
+    }
+  }
+
+  return {selectorStyle:selectorStyle, removeSelectorStyle:removeSelectorStyle,
+	  info: function() {
+	    return selectorList.length+":"+browserRules().length;
+	  }};
+}