1 files changed, 136 insertions, 0 deletions
diff --git a/Source/WebInspectorUI/UserInterface/Models/Timeline.js b/Source/WebInspectorUI/UserInterface/Models/Timeline.js
new file mode 100644
index 000000000..857e8a37c
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/Models/Timeline.js
@@ -0,0 +1,136 @@
+/*
+ * 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.Timeline = class Timeline extends WebInspector.Object
+{
+    constructor(type)
+    {
+        super();
+
+        this._type = type;
+
+        this.reset(true);
+    }
+
+    // Static
+
+    static create(type)
+    {
+        if (type === WebInspector.TimelineRecord.Type.Network)
+            return new WebInspector.NetworkTimeline(type);
+
+        if (type === WebInspector.TimelineRecord.Type.Memory)
+            return new WebInspector.MemoryTimeline(type);
+
+        return new WebInspector.Timeline(type);
+    }
+
+    // Public
+
+    get type() { return this._type; }
+    get startTime() { return this._startTime; }
+    get endTime() { return this._endTime; }
+    get records() { return this._records; }
+
+    reset(suppressEvents)
+    {
+        this._records = [];
+        this._startTime = NaN;
+        this._endTime = NaN;
+
+        if (!suppressEvents) {
+            this.dispatchEventToListeners(WebInspector.Timeline.Event.TimesUpdated);
+            this.dispatchEventToListeners(WebInspector.Timeline.Event.Reset);
+        }
+    }
+
+    addRecord(record)
+    {
+        if (record.updatesDynamically)
+            record.addEventListener(WebInspector.TimelineRecord.Event.Updated, this._recordUpdated, this);
+
+        this._records.push(record);
+
+        this._updateTimesIfNeeded(record);
+
+        this.dispatchEventToListeners(WebInspector.Timeline.Event.RecordAdded, {record});
+    }
+
+    saveIdentityToCookie(cookie)
+    {
+        cookie[WebInspector.Timeline.TimelineTypeCookieKey] = this._type;
+    }
+
+    refresh()
+    {
+        this.dispatchEventToListeners(WebInspector.Timeline.Event.Refreshed);
+    }
+
+    recordsInTimeRange(startTime, endTime, includeRecordBeforeStart)
+    {
+        let lowerIndex = this._records.lowerBound(startTime, (time, record) => time - record.timestamp);
+        let upperIndex = this._records.upperBound(endTime, (time, record) => time - record.timestamp);
+
+        // Include the record right before the start time.
+        if (includeRecordBeforeStart && lowerIndex > 0)
+            lowerIndex--;
+
+        return this._records.slice(lowerIndex, upperIndex);
+    }
+
+    // Private
+
+    _updateTimesIfNeeded(record)
+    {
+        var changed = false;
+
+        if (isNaN(this._startTime) || record.startTime < this._startTime) {
+            this._startTime = record.startTime;
+            changed = true;
+        }
+
+        if (isNaN(this._endTime) || this._endTime < record.endTime) {
+            this._endTime = record.endTime;
+            changed = true;
+        }
+
+        if (changed)
+            this.dispatchEventToListeners(WebInspector.Timeline.Event.TimesUpdated);
+    }
+
+    _recordUpdated(event)
+    {
+        this._updateTimesIfNeeded(event.target);
+    }
+};
+
+WebInspector.Timeline.Event = {
+    Reset: "timeline-reset",
+    RecordAdded: "timeline-record-added",
+    TimesUpdated: "timeline-times-updated",
+    Refreshed: "timeline-refreshed",
+};
+
+WebInspector.Timeline.TimelineTypeCookieKey = "timeline-type";