webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 119 insertions, 0 deletions

diff --git a/Source/WebInspectorUI/UserInterface/Models/Collection.js b/Source/WebInspectorUI/UserInterface/Models/Collection.js
new file mode 100644
index 000000000..8c7739f83
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/Models/Collection.js
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2016 Devin Rousso <dcrousso+webkit@gmail.com>. 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.Collection = class Collection extends WebInspector.Object
+{
+    constructor(typeVerifier)
+    {
+        super();
+
+        this._items = new Set;
+
+        console.assert(!typeVerifier || typeof typeVerifier === "function");
+        this._typeVerifier = typeVerifier || WebInspector.Collection.TypeVerifier.Any;
+    }
+
+     // Public
+
+    get items() { return this._items; }
+    get typeVerifier() { return this._typeVerifier; }
+
+    add(item)
+    {
+        let isValidType = this._typeVerifier(item);
+        console.assert(isValidType);
+        if (!isValidType)
+            return;
+
+        console.assert(!this._items.has(item));
+        this._items.add(item);
+
+        this.itemAdded(item);
+
+        this.dispatchEventToListeners(WebInspector.Collection.Event.ItemAdded, {item});
+    }
+
+    remove(item)
+    {
+        let wasRemoved = this._items.delete(item);
+        console.assert(wasRemoved);
+
+        this.itemRemoved(item);
+
+        this.dispatchEventToListeners(WebInspector.Collection.Event.ItemRemoved, {item});
+    }
+
+    clear()
+    {
+        let items = new Set(this._items);
+
+        this._items.clear();
+
+        this.itemsCleared(items);
+
+        for (let item of items)
+            this.dispatchEventToListeners(WebInspector.Collection.Event.ItemRemoved, {item});
+    }
+
+    toArray()
+    {
+        return Array.from(this._items);
+    }
+
+    toJSON()
+    {
+        return this.toArray();
+    }
+
+     // Protected
+
+    itemAdded(item)
+    {
+        // Implemented by subclasses.
+    }
+
+    itemRemoved(item)
+    {
+        // Implemented by subclasses.
+    }
+
+    itemsCleared(items)
+    {
+        // Implemented by subclasses.
+    }
+};
+
+ WebInspector.Collection.Event = {
+    ItemAdded: "collection-item-added",
+    ItemRemoved: "collection-item-removed",
+};
+
+ WebInspector.Collection.TypeVerifier = {
+    Any: (object) => true,
+    ContentFlow: (object) => object instanceof WebInspector.ContentFlow,
+    Frame: (object) => object instanceof WebInspector.Frame,
+    Resource: (object) => object instanceof WebInspector.Resource,
+    Script: (object) => object instanceof WebInspector.Script,
+};