1 files changed, 124 insertions, 0 deletions
diff --git a/Source/WebInspectorUI/UserInterface/Views/MemoryCategoryView.js b/Source/WebInspectorUI/UserInterface/Views/MemoryCategoryView.js
new file mode 100644
index 000000000..03565507f
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/Views/MemoryCategoryView.js
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2016 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.MemoryCategoryView = class MemoryCategoryView extends WebInspector.Object
+{
+    constructor(category, displayName)
+    {
+        super();
+
+        console.assert(typeof category === "string");
+
+        this._category = category;
+
+        this._element = document.createElement("div");
+        this._element.classList.add("memory-category-view", category);
+
+        this._detailsElement = this._element.appendChild(document.createElement("div"));
+        this._detailsElement.classList.add("details");
+
+        let detailsNameElement = this._detailsElement.appendChild(document.createElement("span"));
+        detailsNameElement.classList.add("name");
+        detailsNameElement.textContent = displayName;
+        this._detailsElement.appendChild(document.createElement("br"));
+        this._detailsMaxElement = this._detailsElement.appendChild(document.createElement("span"));
+        this._detailsElement.appendChild(document.createElement("br"));
+        this._detailsMinElement = this._detailsElement.appendChild(document.createElement("span"));
+        this._updateDetails(NaN, NaN);
+
+        this._graphElement = this._element.appendChild(document.createElement("div"));
+        this._graphElement.classList.add("graph");
+
+        // FIXME: <https://webkit.org/b/153758> Web Inspector: Memory Timeline View should be responsive / resizable
+        let size = new WebInspector.Size(800, 75);
+        this._chart = new WebInspector.LineChart(size);
+        this._graphElement.appendChild(this._chart.element);
+    }
+
+    // Public
+
+    get element() { return this._element; }
+    get category() { return this._category; }
+
+    clear()
+    {
+        this._cachedMinSize = undefined;
+        this._cachedMaxSize = undefined;
+
+        this._chart.clear();
+        this._chart.needsLayout();
+    }
+
+    layoutWithDataPoints(dataPoints, lastTime, minSize, maxSize, xScale, yScale)
+    {
+        console.assert(minSize >= 0);
+        console.assert(maxSize >= 0);
+        console.assert(minSize <= maxSize);
+
+        this._updateDetails(minSize, maxSize);
+        this._chart.clear();
+
+        if (!dataPoints.length)
+            return;
+
+        // Ensure an empty graph is empty.
+        if (!maxSize)
+            return;
+
+        // Extend the first data point to the start so it doesn't look like we originate at zero size.
+        let firstX = 0;
+        let firstY = yScale(dataPoints[0].size);
+        this._chart.addPoint(firstX, firstY);
+
+        // Points for data points.
+        for (let dataPoint of dataPoints) {
+            let x = xScale(dataPoint.time);
+            let y = yScale(dataPoint.size);
+            this._chart.addPoint(x, y);
+        }
+
+        // Extend the last data point to the end time.
+        let lastDataPoint = dataPoints.lastValue;
+        let lastX = Math.floor(xScale(lastTime));
+        let lastY = yScale(lastDataPoint.size);
+        this._chart.addPoint(lastX, lastY);
+
+        this._chart.updateLayout();
+    }
+
+    // Private
+
+    _updateDetails(minSize, maxSize)
+    {
+        if (this._cachedMinSize === minSize && this._cachedMaxSize === maxSize)
+            return;
+
+        this._cachedMinSize = minSize;
+        this._cachedMaxSize = maxSize;
+
+        this._detailsMaxElement.textContent = WebInspector.UIString("Highest: %s").format(Number.isFinite(maxSize) ? Number.bytesToString(maxSize) : emDash);
+        this._detailsMinElement.textContent = WebInspector.UIString("Lowest: %s").format(Number.isFinite(minSize) ? Number.bytesToString(minSize) : emDash);
+    }
+};