Refactor ContentShell to remove ContentViewClient dependency.

content/shell/android/java/src/org/chromium/content_shell/ShellView.java

-// Copyright (c) 2012 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.content_shell;
-
-import android.content.Context;
-import android.graphics.drawable.ClipDrawable;
-import android.text.TextUtils;
-import android.util.AttributeSet;
-import android.view.KeyEvent;
-import android.view.View;
-import android.view.inputmethod.EditorInfo;
-import android.view.inputmethod.InputMethodManager;
-import android.widget.EditText;
-import android.widget.FrameLayout;
-import android.widget.ImageButton;
-import android.widget.LinearLayout;
-import android.widget.TextView;
-import android.widget.TextView.OnEditorActionListener;
-
-import org.chromium.base.CalledByNative;
-import org.chromium.base.JNINamespace;
-import org.chromium.content.browser.ContentView;
-import org.chromium.content.browser.ContentViewClient;
-
-/**
- * Container for the various UI components that make up a shell window.
- */
-@JNINamespace("content")
-public class ShellView extends LinearLayout {
-
-    private static final long COMPLETED_PROGRESS_TIMEOUT_MS = 200;
-
-    private int mNativeShellView;
-    // TODO(jrg): a mContentView.destroy() call is needed, both upstream and downstream.
-    private ContentView mContentView;
-    private EditText mUrlTextView;
-    private ImageButton mPrevButton;
-    private ImageButton mNextButton;
-
-    private ClipDrawable mProgressDrawable;
-
-    /**
-     * Constructor for inflating via XML.
-     */
-    public ShellView(Context context, AttributeSet attrs) {
-        super(context, attrs);
-
-        mNativeShellView = nativeInit();
-    }
-
-    @Override
-    protected void onFinishInflate() {
-        super.onFinishInflate();
-
-        mProgressDrawable = (ClipDrawable) findViewById(R.id.toolbar).getBackground();
-
-        initilizeUrlField();
-        initializeNavigationButtons();
-    }
-
-    /**
-     * @return the native shell view pointer.
-     */
-    protected int getNativeShellView() {
-        return mNativeShellView;
-    }
-
-    private void initilizeUrlField() {
-        mUrlTextView = (EditText) findViewById(R.id.url);
-        mUrlTextView.setOnEditorActionListener(new OnEditorActionListener() {
-            @Override
-            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
-                if ((actionId != EditorInfo.IME_ACTION_GO) && (event == null ||
-                        event.getKeyCode() != KeyEvent.KEYCODE_ENTER ||
-                        event.getAction() != KeyEvent.ACTION_UP)) {
-                    return false;
-                }
-                loadUrl(mUrlTextView.getText().toString());
-                setKeyboardVisibilityForUrl(false);
-                mContentView.requestFocus();
-                return true;
-            }
-        });
-        mUrlTextView.setOnFocusChangeListener(new OnFocusChangeListener() {
-            @Override
-            public void onFocusChange(View v, boolean hasFocus) {
-                setKeyboardVisibilityForUrl(hasFocus);
-                mNextButton.setVisibility(hasFocus ? GONE : VISIBLE);
-                mPrevButton.setVisibility(hasFocus ? GONE : VISIBLE);
-                if (!hasFocus) {
-                    mUrlTextView.setText(mContentView.getUrl());
-                }
-            }
-        });
-    }
-
-    /**
-     * Loads an URL.  This will perform minimal amounts of sanitizing of the URL to attempt to
-     * make it valid.
-     *
-     * @param url The URL to be loaded by the shell.
-     */
-    public void loadUrl(String url) {
-        if (url == null) return;
-
-        if (TextUtils.equals(url, mContentView.getUrl())) {
-            mContentView.reload();
-        } else {
-            mContentView.loadUrlWithoutUrlSanitization(sanitizeUrl(url));
-        }
-        mUrlTextView.clearFocus();
-    }
-
-    /**
-     * Given an URL, this performs minimal sanitizing to ensure it will be valid.
-     * @param url The url to be sanitized.
-     * @return The sanitized URL.
-     */
-    public static String sanitizeUrl(String url) {
-        if (url == null) return url;
-        if (url.startsWith("www.") || url.indexOf(":") == -1) url = "http://" + url;
-        return url;
-    }
-
-    private void initializeNavigationButtons() {
-        mPrevButton = (ImageButton) findViewById(R.id.prev);
-        mPrevButton.setOnClickListener(new OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                if (mContentView.canGoBack()) mContentView.goBack();
-            }
-        });
-
-        mNextButton = (ImageButton) findViewById(R.id.next);
-        mNextButton.setOnClickListener(new OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                if (mContentView.canGoForward()) mContentView.goForward();
-            }
-        });
-    }
-
-    /**
-     * Initializes the ContentView based on the native tab contents pointer passed in.
-     * @param nativeTabContents The pointer to the native tab contents object.
-     */
-    @SuppressWarnings("unused")
-    @CalledByNative
-    private void initFromNativeTabContents(int nativeTabContents) {
-        mContentView = new ContentView(
-                getContext(), nativeTabContents, ContentView.PERSONALITY_CHROME);
-        mContentView.setContentViewClient(new ShellContentViewClient());
-        ((FrameLayout) findViewById(R.id.contentview_holder)).addView(mContentView,
-                new FrameLayout.LayoutParams(
-                        FrameLayout.LayoutParams.MATCH_PARENT,
-                        FrameLayout.LayoutParams.MATCH_PARENT));
-        mContentView.requestFocus();
-    }
-
-    /**
-     * @return The {@link ContentView} currently shown by this Shell.
-     */
-    public ContentView getContentView() {
-        return mContentView;
-    }
-
-    private void setKeyboardVisibilityForUrl(boolean visible) {
-        InputMethodManager imm = (InputMethodManager) getContext().getSystemService(
-                Context.INPUT_METHOD_SERVICE);
-        if (visible) {
-            imm.showSoftInput(mUrlTextView, InputMethodManager.SHOW_IMPLICIT);
-        } else {
-            imm.hideSoftInputFromWindow(mUrlTextView.getWindowToken(), 0);
-        }
-    }
-
-    private native int nativeInit();
-
-    private class ShellContentViewClient extends ContentViewClient {
-        private Runnable mClearProgressRunnable = new Runnable() {
-            @Override
-            public void run() {
-                mProgressDrawable.setLevel(0);
-            }
-        };
-
-        @Override
-        public void onUpdateUrl(String url) {
-            super.onUpdateUrl(url);
-            mUrlTextView.setText(url);
-        }
-
-        @Override
-        public void onLoadProgressChanged(final double progress) {
-            super.onLoadProgressChanged(progress);
-            removeCallbacks(mClearProgressRunnable);
-            mProgressDrawable.setLevel((int) (10000.0 * progress));
-            if (progress == 1.0) postDelayed(mClearProgressRunnable, COMPLETED_PROGRESS_TIMEOUT_MS);
-        }
-
-        @Override
-        public void onTabCrash(int pid) {
-            super.onTabCrash(pid);
-            mProgressDrawable.setLevel(0);
-        }
-    }
-}