Move Java Blimp shell code to app subpackage

blimp/client/app/android/java/src/org/chromium/blimp/toolbar/Toolbar.java

-// Copyright 2015 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.blimp.toolbar;
-
-import android.content.Context;
-import android.graphics.Bitmap;
-import android.text.TextUtils;
-import android.util.AttributeSet;
-import android.view.View;
-import android.widget.ImageButton;
-import android.widget.LinearLayout;
-import android.widget.ProgressBar;
-
-import org.chromium.base.annotations.CalledByNative;
-import org.chromium.base.annotations.JNINamespace;
-import org.chromium.blimp.R;
-import org.chromium.blimp.session.BlimpClientSession;
-
-/**
- * A {@link View} that visually represents the Blimp toolbar, which lets users issue navigation
- * commands and displays relevant navigation UI.
- */
-@JNINamespace("blimp::client")
-public class Toolbar extends LinearLayout implements UrlBar.UrlBarObserver, View.OnClickListener {
-    /**
-     * Delegate for the Toolbar.
-     */
-    public interface ToolbarDelegate {
-        /**
-         * Resets the metrics. Used for displaying per navigation metrics.
-         */
-        public void resetDebugStats();
-    }
-
-    private static final String TAG = "Toolbar";
-
-    private long mNativeToolbarPtr;
-
-    private Context mContext;
-    private UrlBar mUrlBar;
-    private ToolbarMenu mToolbarMenu;
-    private ImageButton mReloadButton;
-    private ImageButton mMenuButton;
-    private ProgressBar mProgressBar;
-    private BlimpClientSession mBlimpClientSession;
-    private ToolbarDelegate mDelegate;
-
-    /**
-     * A URL to load when this object is initialized.  This handles the case where there is a URL
-     * to load before native is ready to receive any URL.
-     * */
-    private String mUrlToLoad;
-
-    /**
-     * Builds a new {@link Toolbar}.
-     * @param context A {@link Context} instance.
-     * @param attrs   An {@link AttributeSet} instance.
-     */
-    public Toolbar(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        mContext = context;
-    }
-
-    /**
-     * @return the mToolbarMenu
-     */
-    public ToolbarMenu getToolbarMenu() {
-        return mToolbarMenu;
-    }
-
-    /**
-     * To be called when the native library is loaded so that this class can initialize its native
-     * components.
-     * @param blimpClientSession The {@link BlimpClientSession} that contains the content-lite
-     *                           features required by the native components of the Toolbar.
-     *        delegate The delegate for the Toolbar.
-     */
-    public void initialize(BlimpClientSession blimpClientSession, ToolbarDelegate delegate) {
-        assert mNativeToolbarPtr == 0;
-
-        mDelegate = delegate;
-
-        mBlimpClientSession = blimpClientSession;
-        mNativeToolbarPtr = nativeInit(mBlimpClientSession);
-        sendUrlTextInternal(mUrlToLoad);
-
-        mToolbarMenu = new ToolbarMenu(mContext, this);
-        mBlimpClientSession.addObserver(mToolbarMenu);
-    }
-
-    /**
-     * To be called when this class should be torn down.  This {@link View} should not be used after
-     * this.
-     */
-    public void destroy() {
-        mBlimpClientSession.removeObserver(mToolbarMenu);
-        if (mNativeToolbarPtr != 0) {
-            nativeDestroy(mNativeToolbarPtr);
-            mNativeToolbarPtr = 0;
-        }
-    }
-
-    /**
-     * Loads {@code text} as if it had been typed by the user.  Useful for specifically loading
-     * startup URLs or testing.
-     * @param text The URL or text to load.
-     */
-    public void loadUrl(String text) {
-        mUrlBar.setText(text);
-        mDelegate.resetDebugStats();
-        sendUrlTextInternal(text);
-    }
-
-    /**
-     * Returns the URL from the URL bar.
-     * @return Current URL
-     */
-    public String getUrl() {
-        return mUrlBar.getText().toString();
-    }
-
-    /**
-     * To be called when the user triggers a back navigation action.
-     * @return Whether or not the back event was consumed.
-     */
-    public boolean onBackPressed() {
-        if (mNativeToolbarPtr == 0) return false;
-        mDelegate.resetDebugStats();
-        return nativeOnBackPressed(mNativeToolbarPtr);
-    }
-
-    /**
-     * To be called when the user triggers a forward navigation action.
-     */
-    public void onForwardPressed() {
-        if (mNativeToolbarPtr == 0) return;
-        mDelegate.resetDebugStats();
-        nativeOnForwardPressed(mNativeToolbarPtr);
-    }
-
-    // View overrides.
-    @Override
-    protected void onFinishInflate() {
-        super.onFinishInflate();
-
-        mUrlBar = (UrlBar) findViewById(R.id.toolbar_url_bar);
-        mUrlBar.addUrlBarObserver(this);
-
-        mReloadButton = (ImageButton) findViewById(R.id.toolbar_reload_btn);
-        mReloadButton.setOnClickListener(this);
-
-        mMenuButton = (ImageButton) findViewById(R.id.menu_button);
-        mMenuButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                mToolbarMenu.showMenu(v);
-            }
-        });
-
-        mProgressBar = (ProgressBar) findViewById(R.id.page_load_progress);
-        mProgressBar.setVisibility(View.GONE);
-    }
-
-    // UrlBar.UrlBarObserver interface.
-    @Override
-    public void onNewTextEntered(String text) {
-        sendUrlTextInternal(text);
-    }
-
-    // View.OnClickListener interface.
-    @Override
-    public void onClick(View view) {
-        if (mNativeToolbarPtr == 0) return;
-        if (view == mReloadButton) nativeOnReloadPressed(mNativeToolbarPtr);
-    }
-
-    private void sendUrlTextInternal(String text) {
-        mUrlToLoad = null;
-        if (TextUtils.isEmpty(text)) return;
-
-        if (mNativeToolbarPtr == 0) {
-            mUrlToLoad = text;
-            return;
-        }
-
-        nativeOnUrlTextEntered(mNativeToolbarPtr, text);
-
-        // When triggering a navigation to a new URL, show the progress bar.
-        // TODO(khushalsagar): We need more signals to hide the bar when the load might have failed.
-        // For instance, in the case of a wrong URL right now or if there is no network connection.
-        updateProgressBar(true);
-    }
-
-    private void updateProgressBar(boolean show) {
-        if (show) {
-            mProgressBar.setVisibility(View.VISIBLE);
-        } else {
-            mProgressBar.setVisibility(View.GONE);
-        }
-    }
-
-    // Methods that are called by native via JNI.
-    @CalledByNative
-    private void onEngineSentUrl(String url) {
-        if (url != null) mUrlBar.setText(url);
-        mDelegate.resetDebugStats();
-    }
-
-    @CalledByNative
-    private void onEngineSentFavicon(Bitmap favicon) {
-        // TODO(dtrainor): Add a UI for the favicon.
-    }
-
-    @CalledByNative
-    private void onEngineSentTitle(String title) {
-        // TODO(dtrainor): Add a UI for the title.
-    }
-
-    @CalledByNative
-    private void onEngineSentLoading(boolean loading) {
-        // TODO(dtrainor): Add a UI for the loading state.
-    }
-
-    @CalledByNative
-    private void onEngineSentPageLoadStatusUpdate(boolean completed) {
-        boolean show = !completed;
-        updateProgressBar(show);
-    }
-
-    private native long nativeInit(BlimpClientSession blimpClientSession);
-    private native void nativeDestroy(long nativeToolbar);
-    private native void nativeOnUrlTextEntered(long nativeToolbar, String text);
-    private native void nativeOnReloadPressed(long nativeToolbar);
-    private native void nativeOnForwardPressed(long nativeToolbar);
-    private native boolean nativeOnBackPressed(long nativeToolbar);
-}