Quota view in Resources pannel.

Source/devtools/front_end/QuotaView.js

+/*
+ * Copyright (C) 2013 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+ * OWNER OR 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.
+ */
+
+/**
+ * @constructor
+ * @extends {WebInspector.View}
+ * @param {string} securityOrigin
+ */
+WebInspector.QuotaView = function(securityOrigin)
+{
+    WebInspector.View.call(this);
+    this.securityOrigin = securityOrigin;
+
+    this.element.addStyleClass("storage-view");
+    this.element.addStyleClass("table");
+
+    this.refreshButton = new WebInspector.StatusBarButton(WebInspector.UIString("Refresh"), "refresh-storage-status-bar-item");
+    this.refreshButton.addEventListener("click", this._refreshButtonClicked, this);
+}
+
+WebInspector.QuotaView.prototype = {
+    get statusBarItems()
+    {
+        return [this.refreshButton.element];
+    },
+
+    wasShown: function()
+    {
+        this._update();
+    },
+
+    /*
+     * @param {?Protocol.Error} error
+     * @param {QuotaAgent.Quota} quota
+     * @param {QuotaAgent.Usage} usage
+     */
+    _showUsageAndQuota: function(error, quota, usage)
+    {
+        var columns = [

[aandrey, 2013/09/20 08:31:59]

check error?

[SeRya, 2013/09/27 13:31:01]

Done.

+            {id: "key", title: WebInspector.UIString("Key"), editable: true, weight: 50},
+            {id: "value", title: WebInspector.UIString("Value"), editable: true, weight: 50}
+        ];
+
+        var items = [
+            { name: WebInspector.UIString("Available space"), value: Number.bytesToString(quota.availableSpace) },
+            { name: WebInspector.UIString("Temporary global quota"), value: Number.bytesToString(quota.temporaryGlobalQuota) },
+            { name: WebInspector.UIString("Persistent host quota"), value: Number.bytesToString(quota.persistentHostQuota) },
+            { name: WebInspector.UIString("Temporary file system usage"), value: Number.bytesToString(usage.temporaryFileSystemUsage) },
+            { name: WebInspector.UIString("Persistent file system usage"), value: Number.bytesToString(usage.persistentFileSystemUsage) },
+            { name: WebInspector.UIString("Syncable file system usage"), value: Number.bytesToString(usage.syncableFileSystemUsage) },
+            { name: WebInspector.UIString("Web SQL usage"), value: Number.bytesToString(usage.databaseUsage) },
+            { name: WebInspector.UIString("Application Cache usage"), value: Number.bytesToString(usage.appcacheUsage) },
+            { name: WebInspector.UIString("IndexedDB usage"), value: Number.bytesToString(usage.indexedDatabaseUsage) }
+        ];
+        var dataGrid = new WebInspector.DataGrid(columns);
+        dataGrid.setName("QuotaItemsView");
+
+        for (var i = 0; i < items.length; i++)
+            dataGrid.rootNode().appendChild(new WebInspector.DataGridNode({key: items[i].name, value: items[i].value}, false));
+
+        dataGrid.show(this.element);
+    },
+
+    _refreshButtonClicked: function(event)
+    {
+        this._update();
+    },
+
+    _update: function()
+    {
+        this.detachChildViews();
+        PageAgent.queryUsageAndQuota(this.securityOrigin, this._showUsageAndQuota.bind(this));

[aandrey, 2013/09/20 08:31:59]

fyi. if this is expensive in the backend, you should not call it until you get
the response from the previous command.

just wondering what is the latency to request WebSQL, IndexedDB, file system and
app cache all together?

[SeRya, 2013/09/27 13:31:01]

It usually needs to find a proper ClientUsageTracker which has the value so it's
inexpensive.

+    },
+
+    __proto__: WebInspector.View.prototype
+}
+