❄ Add InfoBarCompactLayout

chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarCompactLayout.java

Index: chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarCompactLayout.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarCompactLayout.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarCompactLayout.java
new file mode 100644
index 0000000000000000000000000000000000000000..285ef4f5b0106bd75eb9466d3a9979af999d0ae3
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarCompactLayout.java
@@ -0,0 +1,90 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.infobar;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.view.Gravity;
+import android.view.View;
+import android.widget.ImageButton;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+
+import org.chromium.chrome.R;
+
+/**
+ * Lays out controls along a line, sandwiched between an (optional) icon and close button.
+ * This should only be used by the {@link InfoBar} class, and is created when the InfoBar subclass
+ * declares itself to be using a compact layout via {@link InfoBar#usesCompactLayout}.
+ */
+public class InfoBarCompactLayout extends LinearLayout implements View.OnClickListener {
+    private final InfoBarView mInfoBarView;
+    private final int mCompactInfoBarSize;
+    private final View mCloseButton;
+
+    InfoBarCompactLayout(
+            Context context, InfoBarView infoBarView, int iconResourceId, Bitmap iconBitmap) {
+        super(context);
+        mInfoBarView = infoBarView;
+        mCompactInfoBarSize =
+                context.getResources().getDimensionPixelOffset(R.dimen.infobar_compact_size);
+
+        setOrientation(LinearLayout.HORIZONTAL);
+        setGravity(Gravity.CENTER_VERTICAL);
+
+        prepareIcon(iconResourceId, iconBitmap);
+        mCloseButton = prepareCloseButton();
+    }
+
+    @Override
+    public void onClick(View view) {
+        if (view.getId() == R.id.infobar_close_button) {
+            mInfoBarView.onCloseButtonClicked();
+        } else {
+            assert false;
+        }
+    }
+
+    /**
+     * Inserts a view before the close button.
+     * @param view   View to insert.
+     * @param weight Weight to assign to it.
+     */
+    protected void addContent(View view, float weight) {
+        LinearLayout.LayoutParams params;
+        if (weight <= 0.0f) {
+            params = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, mCompactInfoBarSize);
+        } else {
+            params = new LinearLayout.LayoutParams(0, mCompactInfoBarSize);
+            params.weight = weight;
+        }
+        params.gravity = Gravity.BOTTOM;
+        addView(view, indexOfChild(mCloseButton), params);
+    }
+
+    /**
+     * Adds an icon to the start of the infobar, if the infobar requires one.
+     * @param iconResourceId Resource ID of the icon to use.
+     * @param iconBitmap     Raw {@link Bitmap} to use instead of a resource.
+     */
+    private void prepareIcon(int iconResourceId, Bitmap iconBitmap) {
+        ImageView iconView = InfoBarLayout.createIconView(getContext(), iconResourceId, iconBitmap);
+        if (iconView != null) {
+            LinearLayout.LayoutParams iconParams =
+                    new LinearLayout.LayoutParams(mCompactInfoBarSize, mCompactInfoBarSize);
+            addView(iconView, iconParams);
+        }
+    }
+
+    /** Adds a close button to the end of the infobar. */
+    private View prepareCloseButton() {
+        ImageButton closeButton = InfoBarLayout.createCloseButton(getContext());
+        closeButton.setOnClickListener(this);
+        LinearLayout.LayoutParams closeParams =
+                new LinearLayout.LayoutParams(mCompactInfoBarSize, mCompactInfoBarSize);
+        addView(closeButton, closeParams);
+        return closeButton;
+    }
+}