[android] Password generation UI for android.

chrome/android/java/src/org/chromium/chrome/browser/autofill/PasswordGenerationPopupBridge.java

Index: chrome/android/java/src/org/chromium/chrome/browser/autofill/PasswordGenerationPopupBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/autofill/PasswordGenerationPopupBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/autofill/PasswordGenerationPopupBridge.java
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+++ b/chrome/android/java/src/org/chromium/chrome/browser/autofill/PasswordGenerationPopupBridge.java
@@ -0,0 +1,157 @@
+// Copyright 2014 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.autofill;
+
+import android.content.Context;
+import android.os.Handler;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.PopupWindow;
+
+import org.chromium.base.CalledByNative;
+import org.chromium.base.JNINamespace;
+import org.chromium.ui.DropdownPopupWindow;
+import org.chromium.ui.base.ViewAndroid;
+import org.chromium.ui.base.ViewAndroidDelegate;
+import org.chromium.ui.base.WindowAndroid;
+
+/**
+ * JNI call glue for password generation between native and Java objects.
+ */
+@JNINamespace("autofill")
+public class PasswordGenerationPopupBridge implements AdapterView.OnItemClickListener,
+        PopupWindow.OnDismissListener, PasswordGenerationAdapter.Delegate {
+    private final long mNativePasswordGenerationPopupViewAndroid;
+    private final Context mContext;
+    private final DropdownPopupWindow mPopup;
+    private float mAnchorWidth;
+
+    /**
+     * A convenience method for the constructor to be invoked from the native counterpart.
+     * @param nativePopup The pointer to the native counterpart.
+     * @param windowAndroid The browser window.
+     * @param containerViewDelegate Interface to acquire and release anchors.
+     */
+    @CalledByNative
+    private static PasswordGenerationPopupBridge create(long nativePopup,
+            WindowAndroid windowAndroid, ViewAndroid viewAndroid) {
+        return new PasswordGenerationPopupBridge(nativePopup, windowAndroid,
+                viewAndroid.getViewAndroidDelegate());
+    }
+
+    /**
+     * Builds the bridge between native and Java objects.
+     * @param nativePopup The pointer to the native counterpart.
+     * @param windowAndroid The browser window.
+     * @param containerViewDelegate Interface to acquire and release anchors.
+     */
+    public PasswordGenerationPopupBridge(long nativePopup, WindowAndroid windowAndroid,
+            ViewAndroidDelegate containerViewDelegate) {
+        mNativePasswordGenerationPopupViewAndroid = nativePopup;
+        mContext = windowAndroid.getActivity().get();
+        // mContext could've been garbage collected.
+        if (mContext == null) {
+            mPopup = null;
+            // Prevent destroying the native counterpart when it's about to derefence its own
+            // members in UpdateBoundsAndRedrawPopup().
+            new Handler().post(new Runnable() {
+                @Override
+                public void run() {
+                    onDismiss();
+                }
+            });
+        } else {
+            mPopup = new DropdownPopupWindow(mContext, containerViewDelegate);
+            mPopup.setOnItemClickListener(this);
+            mPopup.setOnDismissListener(this);
+        }
+        mAnchorWidth = 0;
+    }
+
+    /**
+     * Handles clicks on popup list elements. Only suggestion element is enabled. Clicking on the
+     * suggestion element notifies the native counterpart that the suggested password was selected.
+     * @param parent The parent view where the click happened.
+     * @param view The view that was provided by the adapter that was clicked.
+     * @param position The position of the view in the adapter.
+     * @param id The row id of the clicked element.
+     */
+    @Override
+    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+        nativePasswordSelected(mNativePasswordGenerationPopupViewAndroid);
+    }
+
+    private native void nativePasswordSelected(long nativePasswordGenerationPopupViewAndroid);
+
+    /**
+     * Handles dismissing the popup window. The native counterpart is notified to destroy the
+     * controller.
+     */
+    @Override
+    public void onDismiss() {
+        nativeDismissed(mNativePasswordGenerationPopupViewAndroid);
+    }
+
+    private native void nativeDismissed(long nativePasswordGenerationPopupViewAndroid);
+
+    /**
+     * Sets the location and size of the popup anchor (password input field).
+     * @param x X coordinate.
+     * @param y Y coordinate.
+     * @param width The width of the anchor.
+     * @param height The height of the anchor.
+     */
+    @CalledByNative
+    private void setAnchorRect(float x, float y, float width, float height) {
+        mAnchorWidth = width;
+        if (mPopup != null) mPopup.setAnchorRect(x, y, width, height);
+    }
+
+    /**
+     * Shows a password generation popup with specified data. Should be called after
+     * setAnchorRect().
+     * @param isRtl True if the popup should be RTL.
+     * @param passwordDisplayed Whether the generated password should be displayed.
+     * @param password The auto-generated password to suggest.
+     * @param suggestionTitle The translated title of the suggestion part of the popup.
+     * @param explanationText The translated text that explains the popup.
+     * @param explanationTextLinkRangeStart The start of the range in the explanation text that
+     * should be a link to the saved passwords.
+     * @param explanationTextLinkRangeEnd The end of the range in the explanation text that should
+     * be a link to the saved passwords.
+     */
+    @CalledByNative
+    private void show(boolean isRtl, boolean passwordDisplayed, String password,
+            String suggestionTitle, String explanationText, int explanationTextLinkRangeStart,
+            int explanationTextLinkRangeEnd) {
+        if (mPopup != null) {
+            PasswordGenerationAdapter adapter = new PasswordGenerationAdapter(mContext, this,
+                    passwordDisplayed, password, suggestionTitle, explanationText,
+                    explanationTextLinkRangeStart, explanationTextLinkRangeEnd, mAnchorWidth);
+            mPopup.setAdapter(adapter);
+            mPopup.setRtl(isRtl);
+            mPopup.show();
+        }
+    }
+
+    /**
+     * Called from adapter when the "saved passwords" link is clicked.
+     */
+    @Override
+    public void onSavedPasswordsLinkClicked() {
+        nativeSavedPasswordsLinkClicked(mNativePasswordGenerationPopupViewAndroid);
+    }
+
+    private native void nativeSavedPasswordsLinkClicked(
+            long nativePasswordGenerationPopupViewAndroid);
+
+    /**
+     * Hides the password generation popup.
+     */
+    @CalledByNative
+    private void hide() {
+        if (mPopup != null) mPopup.dismiss();
+    }
+}