1 files changed, 164 insertions, 0 deletions
diff --git a/Source/WebInspectorUI/UserInterface/ResourceCollection.js b/Source/WebInspectorUI/UserInterface/ResourceCollection.js
new file mode 100644
index 000000000..e68334a8e
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/ResourceCollection.js
@@ -0,0 +1,164 @@
+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+WebInspector.ResourceCollection = function()
+{
+    WebInspector.Object.call(this);
+
+    this._resources = [];
+    this._resourceURLMap = {};
+    this._resourcesTypeMap = {};
+};
+
+WebInspector.ResourceCollection.prototype = {
+    constructor: WebInspector.ResourceCollection,
+
+    // Public
+
+    get resources()
+    {
+        return this._resources;
+    },
+
+    resourceForURL: function(url)
+    {
+        return this._resourceURLMap[url] || null;
+    },
+
+    resourcesWithType: function(type)
+    {
+        return this._resourcesTypeMap[type] || [];
+    },
+
+    addResource: function(resource)
+    {
+        console.assert(resource instanceof WebInspector.Resource);
+        if (!(resource instanceof WebInspector.Resource))
+            return;
+
+        this._associateWithResource(resource);
+    },
+
+    removeResource: function(resourceOrURL)
+    {
+        console.assert(resourceOrURL);
+
+        if (resourceOrURL instanceof WebInspector.Resource)
+            var url = resourceOrURL.url;
+        else
+            var url = resourceOrURL;
+
+        // Fetch the resource by URL even if we were passed a WebInspector.Resource.
+        // We do this incase the WebInspector.Resource is a new object that isn't in _resources,
+        // but the URL is a valid resource.
+        var resource = this.resourceForURL(url);
+        console.assert(resource instanceof WebInspector.Resource);
+        if (!(resource instanceof WebInspector.Resource))
+            return null;
+
+        this._disassociateWithResource(resource);
+
+        return resource;
+    },
+
+    removeAllResources: function()
+    {
+        if (!this._resources.length)
+            return;
+
+        for (var i = 0; i < this._resources.length; ++i)
+            this._disassociateWithResource(this._resources[i], true);
+
+        this._resources = [];
+        this._resourceURLMap = {};
+        this._resourcesTypeMap = {};
+    },
+
+    // Private
+
+    _associateWithResource: function(resource)
+    {
+        this._resources.push(resource);
+        this._resourceURLMap[resource.url] = resource;
+
+        if (!this._resourcesTypeMap[resource.type])
+            this._resourcesTypeMap[resource.type] = [];
+        this._resourcesTypeMap[resource.type].push(resource);
+
+        resource.addEventListener(WebInspector.Resource.Event.URLDidChange, this._resourceURLDidChange, this);
+        resource.addEventListener(WebInspector.Resource.Event.TypeDidChange, this._resourceTypeDidChange, this);
+    },
+
+    _disassociateWithResource: function(resource, skipRemoval)
+    {
+        if (skipRemoval) {
+            this._resources.remove(resource);
+            if (this._resourcesTypeMap[resource.type])
+                this._resourcesTypeMap[resource.type].remove(resource);
+            delete this._resourceURLMap[resource.url];
+        }
+
+        resource.removeEventListener(WebInspector.Resource.Event.URLDidChange, this._resourceURLDidChange, this);
+        resource.removeEventListener(WebInspector.Resource.Event.TypeDidChange, this._resourceTypeDidChange, this);
+    },
+
+    _resourceURLDidChange: function(event)
+    {
+        var resource = event.target;
+        console.assert(resource instanceof WebInspector.Resource);
+        if (!(resource instanceof WebInspector.Resource))
+            return;
+
+        var oldURL = event.data.oldURL;
+        console.assert(oldURL);
+        if (!oldURL)
+            return;
+
+        this._resourceURLMap[resource.url] = resource;
+        delete this._resourceURLMap[oldURL];
+    },
+
+    _resourceTypeDidChange: function(event)
+    {
+        var resource = event.target;
+        console.assert(resource instanceof WebInspector.Resource);
+        if (!(resource instanceof WebInspector.Resource))
+            return;
+
+        var oldType = event.data.oldType;
+        console.assert(oldType);
+        if (!oldType)
+            return;
+
+        if (!this._resourcesTypeMap[resource.type])
+            this._resourcesTypeMap[resource.type] = [];
+        this._resourcesTypeMap[resource.type].push(resource);
+
+        if (this._resourcesTypeMap[oldType])
+            this._resourcesTypeMap[oldType].remove(resource);
+    }
+};
+
+WebInspector.ResourceCollection.prototype.__proto__ = WebInspector.Object.prototype;