Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/webapps/FullScreenActivityTab.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.chrome.browser.webapps;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.ContextMenu;
+import android.view.Menu;
+
+import com.google.android.apps.chrome.R;
+
+import org.chromium.base.annotations.SuppressFBWarnings;
+import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.browser.IntentHandler;
+import org.chromium.chrome.browser.ShortcutHelper;
+import org.chromium.chrome.browser.Tab;
+import org.chromium.chrome.browser.TabState;
+import org.chromium.chrome.browser.TabUma.TabCreationState;
+import org.chromium.chrome.browser.UrlUtilities;
+import org.chromium.chrome.browser.compositor.layouts.content.TabContentManager;
+import org.chromium.chrome.browser.contextmenu.ContextMenuHelper;
+import org.chromium.chrome.browser.contextmenu.ContextMenuParams;
+import org.chromium.chrome.browser.contextmenu.ContextMenuPopulator;
+import org.chromium.chrome.browser.document.ChromeLauncherActivity;
+import org.chromium.chrome.browser.tab.ChromeTab;
+import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
+import org.chromium.chrome.browser.util.StreamUtil;
+import org.chromium.content_public.browser.LoadUrlParams;
+import org.chromium.content_public.browser.WebContents;
+import org.chromium.content_public.browser.WebContentsObserver;
+import org.chromium.ui.base.Clipboard;
+import org.chromium.ui.base.PageTransition;
+import org.chromium.ui.base.WindowAndroid;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.net.URI;
+
+/**
+ * A tab that will be used for FullScreenActivity. See {@link FullScreenActivity} for more.
+ */
+@SuppressFBWarnings("URF_UNREAD_FIELD")
+public class FullScreenActivityTab extends ChromeTab {
+    private static final String TAG = "FullScreenActivityTab";
+
+    /**
+     * A delegate to determine top controls visibility.
+     */
+    public interface TopControlsVisibilityDelegate {
+        /**
+         * Determines whether top controls should be shown.
+         *
+         * @param uri The URI to display.
+         * @param securityLevel Security level of the Tab.
+         * @return Whether the URL bar should be visible or not.
+         */
+        boolean shouldShowTopControls(String uri, int securityLevel);
+    }
+
+    static final String BUNDLE_TAB_ID = "tabId";
+    static final String BUNDLE_TAB_URL = "tabUrl";
+
+    private WebContentsObserver mObserver;
+    private TopControlsVisibilityDelegate mTopControlsVisibilityDelegate;
+
+    private FullScreenActivityTab(ChromeActivity activity, WindowAndroid window,
+            TopControlsVisibilityDelegate topControlsVisibilityDelegate) {
+        super(INVALID_TAB_ID, activity, false, window, TabLaunchType.FROM_MENU_OR_OVERVIEW,
+                INVALID_TAB_ID, null, null);
+        initializeFullScreenActivityTab(
+                activity.getTabContentManager(), false, topControlsVisibilityDelegate);
+    }
+
+    private FullScreenActivityTab(int id, ChromeActivity activity, WindowAndroid window,
+            TabState state, TopControlsVisibilityDelegate topControlsVisibilityDelegate) {
+        super(id, activity, false, window, TabLaunchType.FROM_RESTORE, Tab.INVALID_TAB_ID,
+                TabCreationState.FROZEN_ON_RESTORE, state);
+        initializeFullScreenActivityTab(
+                activity.getTabContentManager(), true, topControlsVisibilityDelegate);
+    }
+
+    private void initializeFullScreenActivityTab(TabContentManager tabContentManager,
+            boolean unfreeze, TopControlsVisibilityDelegate topControlsVisibilityDelegate) {
+        initialize(null, tabContentManager, false);
+        if (unfreeze) unfreezeContents();
+        mObserver = createWebContentsObserver();
+        mTopControlsVisibilityDelegate = topControlsVisibilityDelegate;
+    }
+
+    /**
+     * Saves the state of the tab out to the {@link Bundle}.
+     */
+    void saveInstanceState(Bundle outState) {
+        outState.putInt(BUNDLE_TAB_ID, getId());
+        outState.putString(BUNDLE_TAB_URL, getUrl());
+    }
+
+    /**
+     * @return WebContentsObserver that watches for changes.
+     */
+    private WebContentsObserver createWebContentsObserver() {
+        return new WebContentsObserver(getWebContents()) {
+            @Override
+            public void didCommitProvisionalLoadForFrame(
+                    long frameId, boolean isMainFrame, String url, int transitionType) {
+                if (isMainFrame) {
+                    // Notify the renderer to permanently hide the top controls since they do
+                    // not apply to fullscreen content views.
+                    updateTopControlsState(getTopControlsStateConstraints(),
+                            getTopControlsStateConstraints(), true);
+                }
+            }
+        };
+    }
+
+    @Override
+    protected void initContentViewCore(WebContents webContents) {
+        super.initContentViewCore(webContents);
+        getContentViewCore().setFullscreenRequiredForOrientationLock(false);
+    }
+
+    /**
+     * Loads the given {@code url}.
+     * @param url URL to load.
+     */
+    public void loadUrl(String url) {
+        loadUrl(new LoadUrlParams(url, PageTransition.AUTO_TOPLEVEL));
+    }
+
+    /**
+     * Saves the tab data out to a file.
+     */
+    void saveState(File activityDirectory) {
+        File tabFile = getTabFile(activityDirectory, getId());
+
+        FileOutputStream foutput = null;
+        try {
+            foutput = new FileOutputStream(tabFile);
+            TabState.saveState(foutput, getState(), false);
+        } catch (FileNotFoundException exception) {
+            Log.e(TAG, "Failed to save out tab state.", exception);
+        } catch (IOException exception) {
+            Log.e(TAG, "Failed to save out tab state.", exception);
+        } finally {
+            StreamUtil.closeQuietly(foutput);
+        }
+    }
+
+    /**
+     * @return {@link File} pointing at the tab state for this Activity.
+     */
+    private static File getTabFile(File activityDirectory, int tabId) {
+        return new File(activityDirectory, TabState.getTabStateFilename(tabId, false));
+    }
+
+    /**
+     * Creates the {@link FullScreenActivityTab} used by the FullScreenActivity.
+     * If the {@code savedInstanceState} exists, then the user did not intentionally close the app
+     * by swiping it away in the recent tasks list.  In that case, we try to restore the tab from
+     * disk.
+     * @param activity Activity that will own the Tab.
+     * @param directory Directory associated with the Activity.  Null implies tab state isn't saved.
+     * @param savedInstanceState Bundle saved out when the app was killed by Android.  May be null.
+     * @param topControlsVisibilityDelegate Delegate to determine top controls visibility.
+     * @return {@link FullScreenActivityTab} for the Activity.
+     */
+    public static FullScreenActivityTab create(ChromeActivity activity, WindowAndroid window,
+            File directory, Bundle savedInstanceState,
+            TopControlsVisibilityDelegate topControlsVisibilityDelegate) {
+        FullScreenActivityTab tab = null;
+
+        int tabId = Tab.INVALID_TAB_ID;
+        String tabUrl = null;
+        if (savedInstanceState != null) {
+            tabId = savedInstanceState.getInt(BUNDLE_TAB_ID, INVALID_TAB_ID);
+            tabUrl = savedInstanceState.getString(BUNDLE_TAB_URL);
+        }
+
+        if (tabId != Tab.INVALID_TAB_ID && tabUrl != null && directory != null) {
+            FileInputStream stream = null;
+            try {
+                // Restore the tab.
+                stream = new FileInputStream(getTabFile(directory, tabId));
+                TabState tabState = TabState.readState(stream, false);
+                tab = new FullScreenActivityTab(
+                        tabId, activity, window, tabState, topControlsVisibilityDelegate);
+            } catch (FileNotFoundException exception) {
+                Log.e(TAG, "Failed to restore tab state.", exception);
+            } catch (IOException exception) {
+                Log.e(TAG, "Failed to restore tab state.", exception);
+            } finally {
+                StreamUtil.closeQuietly(stream);
+            }
+        }
+
+        if (tab == null) {
+            // Create a new tab.
+            tab = new FullScreenActivityTab(activity, window, topControlsVisibilityDelegate);
+        }
+
+        return tab;
+    }
+
+    @Override
+    protected ContextMenuPopulator createContextMenuPopulator() {
+        return new ContextMenuPopulator() {
+            private final Clipboard mClipboard;
+
+            // public ContextMenuPopulator()
+            {
+                mClipboard = new Clipboard(getApplicationContext());
+            }
+
+            @Override
+            public boolean shouldShowContextMenu(ContextMenuParams params) {
+                return params != null && params.isAnchor();
+            }
+
+            @Override
+            public boolean onItemSelected(ContextMenuHelper helper, ContextMenuParams params,
+                    int itemId) {
+                if (itemId == org.chromium.chrome.R.id.contextmenu_copy_link_address_text) {
+                    String url = params.getUnfilteredLinkUrl();
+                    mClipboard.setText(url, url);
+                    return true;
+                } else if (itemId == org.chromium.chrome.R.id.contextmenu_copy_link_text) {
+                    String text = params.getLinkText();
+                    mClipboard.setText(text, text);
+                    return true;
+                } else if (itemId == R.id.menu_id_open_in_chrome) {
+                    Intent chromeIntent =
+                            new Intent(Intent.ACTION_VIEW, Uri.parse(params.getLinkUrl()));
+                    chromeIntent.setPackage(getApplicationContext().getPackageName());
+                    chromeIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+                    boolean activityStarted = false;
+                    if (params.getPageUrl() != null) {
+                        try {
+                            URI pageUri = URI.create(params.getPageUrl());
+                            if (UrlUtilities.isInternalScheme(pageUri)) {
+                                IntentHandler.startChromeLauncherActivityForTrustedIntent(
+                                        chromeIntent, getApplicationContext());
+                                activityStarted = true;
+                            }
+                        } catch (IllegalArgumentException ex) {
+                            // Ignore the exception for creating the URI and launch the intent
+                            // without the trusted intent extras.
+                        }
+                    }
+
+                    if (!activityStarted) {
+                        getApplicationContext().startActivity(chromeIntent);
+                        activityStarted = true;
+                    }
+                    return true;
+                }
+
+                return false;
+            }
+
+            @Override
+            public void buildContextMenu(ContextMenu menu, Context context,
+                    ContextMenuParams params) {
+                menu.add(Menu.NONE, org.chromium.chrome.R.id.contextmenu_copy_link_address_text,
+                        Menu.NONE, org.chromium.chrome.R.string.contextmenu_copy_link_address);
+
+                String linkText = params.getLinkText();
+                if (linkText != null) linkText = linkText.trim();
+
+                if (!TextUtils.isEmpty(linkText)) {
+                    menu.add(Menu.NONE, org.chromium.chrome.R.id.contextmenu_copy_link_text,
+                            Menu.NONE, org.chromium.chrome.R.string.contextmenu_copy_link_text);
+                }
+
+                menu.add(Menu.NONE, R.id.menu_id_open_in_chrome, Menu.NONE,
+                        R.string.menu_open_in_chrome);
+            }
+        };
+    }
+
+    @Override
+    protected boolean isHidingTopControlsEnabled() {
+        if (getFullscreenManager() == null) return true;
+        if (getFullscreenManager().getPersistentFullscreenMode()) return true;
+        if (mTopControlsVisibilityDelegate == null) return false;
+        return !mTopControlsVisibilityDelegate.shouldShowTopControls(getUrl(), getSecurityLevel());
+    }
+
+    @Override
+    public boolean isShowingTopControlsEnabled() {
+        // On webapp activity and embedd content view activity, it's either hiding or showing.
+        // Users cannot change the visibility state by sliding it in or out.
+        return !isHidingTopControlsEnabled();
+    }
+
+    @Override
+    protected FullScreenTabWebContentsDelegateAndroid createWebContentsDelegate() {
+        return new FullScreenTabWebContentsDelegateAndroid();
+    }
+
+    /**
+     * A FullScreenActivityTab is meant to be used for WebappActivities which
+     * behave slightly differently from tabs. The main difference being that
+     * it doesn't have a notion of active tab. Thus, some WebContentsDelegate
+     * method have to be redefined.
+     */
+    public class FullScreenTabWebContentsDelegateAndroid
+            extends TabChromeWebContentsDelegateAndroidImpl {
+        @Override
+        public void activateContents() {
+            if (!(mActivity instanceof WebappActivity)) return;
+
+            WebappInfo webAppInfo = ((WebappActivity) mActivity).getWebappInfo();
+            String url = webAppInfo.uri().toString();
+
+            Intent intent = new Intent();
+            intent.setAction(Intent.ACTION_MAIN);
+            intent.setPackage(mActivity.getPackageName());
+            intent.putExtra(ChromeLauncherActivity.EXTRA_BRING_WEBAPP_TO_FRONT, true);
+
+            intent.putExtra(ShortcutHelper.EXTRA_ICON, webAppInfo.getEncodedIcon());
+            intent.putExtra(ShortcutHelper.EXTRA_ID, webAppInfo.id());
+            intent.putExtra(ShortcutHelper.EXTRA_URL, url);
+            intent.putExtra(ShortcutHelper.EXTRA_TITLE, webAppInfo.title());
+            intent.putExtra(ShortcutHelper.EXTRA_ORIENTATION, webAppInfo.orientation());
+            intent.putExtra(ShortcutHelper.EXTRA_MAC, ShortcutHelper.getEncodedMac(mActivity, url));
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+            getApplicationContext().startActivity(intent);
+        }
+    }
+}