[DevTools] Added regex support to console filters.

Source/devtools/front_end/FilterBar.js

Index: Source/devtools/front_end/FilterBar.js
diff --git a/Source/devtools/front_end/FilterBar.js b/Source/devtools/front_end/FilterBar.js
index b7cc8425fef7c1991d77aebc5f62a731c669d04e..0ae33e2fabc5aeb1ae4e6376f18688caa5ae5a6e 100644
--- a/Source/devtools/front_end/FilterBar.js
+++ b/Source/devtools/front_end/FilterBar.js
@@ -159,9 +159,13 @@ WebInspector.FilterUI.prototype = {
  * @constructor
  * @implements {WebInspector.FilterUI}
  * @extends {WebInspector.Object}
+ * @param {boolean=} supportRegex
  */
-WebInspector.TextFilterUI = function()
+WebInspector.TextFilterUI = function(supportRegex)
 {
+    this._supportRegex = !!supportRegex;
+    this._regex = null;
+
     this._filterElement = document.createElement("div");
     this._filterElement.className = "filter-text-filter";
 
@@ -171,6 +175,18 @@ WebInspector.TextFilterUI = function()
     this._filterInputElement.addEventListener("mousedown", this._onFilterFieldManualFocus.bind(this), false); // when the search field is manually selected
     this._filterInputElement.addEventListener("input", this._onInput.bind(this), false);
     this._filterInputElement.addEventListener("change", this._onInput.bind(this), false);
+
+    if (this._supportRegex) {
+        this._filterElement.classList.add("supports-regex");
+        this._regexCheckBox = this._filterElement.createChild("input");
+        this._regexCheckBox.type = "checkbox";
+        this._regexCheckBox.id = "text-filter-regex";
+        this._regexCheckBox.addEventListener("change", this._onInput.bind(this), false);
+
+        this._regexLabel = this._filterElement.createChild("label");
+        this._regexLabel.htmlFor = "text-filter-regex";
+        this._regexLabel.textContent = WebInspector.UIString("Regex");
+    }
 }
 
 WebInspector.TextFilterUI.prototype = {
@@ -212,10 +228,6 @@ WebInspector.TextFilterUI.prototype = {
      */
     regex: function()
     {
-        if (this._regex !== undefined)
-            return this._regex;
-        var filterQuery = this.value();
-        this._regex = filterQuery ? createPlainTextSearchRegex(filterQuery, "i") : null;
         return this._regex;
     },
 
@@ -236,7 +248,22 @@ WebInspector.TextFilterUI.prototype = {
     },
 
     _valueChanged: function() {
-        delete this._regex;
+        var filterQuery = this.value();
+
+        this._regex = null;
+        this._filterInputElement.classList.remove("filter-text-invalid");
+        if (filterQuery) {
+            if (this._supportRegex && this._regexCheckBox.checked) {
+                try {
+                    this._regex = new RegExp(filterQuery, "i");
+                } catch (e) {
+                    this._filterInputElement.classList.add("filter-text-invalid");
+                }
+            } else {
+                this._regex = createPlainTextSearchRegex(filterQuery, "i");
+            }
+        }
+
         this.dispatchEventToListeners(WebInspector.FilterUI.Events.FilterChanged, null);
     },