package com.android.browser;
-import android.content.Context;
-import android.graphics.Picture;
-import android.net.http.SslError;
import android.os.Bundle;
-import android.os.Message;
import android.util.Log;
-import android.view.Gravity;
-import android.view.LayoutInflater;
import android.view.View;
-import android.view.ViewGroup;
-import android.view.View.OnClickListener;
-import android.webkit.HttpAuthHandler;
-import android.webkit.JsPromptResult;
-import android.webkit.JsResult;
-import android.webkit.SslErrorHandler;
import android.webkit.WebBackForwardList;
-import android.webkit.WebChromeClient;
-import android.webkit.WebHistoryItem;
import android.webkit.WebView;
-import android.webkit.WebViewClient;
-import android.widget.FrameLayout;
-import android.widget.ImageButton;
import java.io.File;
-import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.Vector;
// Log Tag
private static final String LOGTAG = "TabControl";
// Maximum number of tabs.
- static final int MAX_TABS = 8;
- // Static instance of an empty callback.
- private static final WebViewClient mEmptyClient =
- new WebViewClient();
- // Instance of BackgroundChromeClient for background tabs.
- private final BackgroundChromeClient mBackgroundChromeClient =
- new BackgroundChromeClient();
+ private static final int MAX_TABS = 8;
// Private array of WebViews that are used as tabs.
private ArrayList<Tab> mTabs = new ArrayList<Tab>(MAX_TABS);
// Queue of most recently viewed tabs.
// A private instance of BrowserActivity to interface with when adding and
// switching between tabs.
private final BrowserActivity mActivity;
- // Inflation service for making subwindows.
- private final LayoutInflater mInflateService;
- // Subclass of WebViewClient used in subwindows to notify the main
- // WebViewClient of certain WebView activities.
- private class SubWindowClient extends WebViewClient {
- // The main WebViewClient.
- private final WebViewClient mClient;
-
- SubWindowClient(WebViewClient client) {
- mClient = client;
- }
- @Override
- public void doUpdateVisitedHistory(WebView view, String url,
- boolean isReload) {
- mClient.doUpdateVisitedHistory(view, url, isReload);
- }
- @Override
- public boolean shouldOverrideUrlLoading(WebView view, String url) {
- return mClient.shouldOverrideUrlLoading(view, url);
- }
- @Override
- public void onReceivedSslError(WebView view, SslErrorHandler handler,
- SslError error) {
- mClient.onReceivedSslError(view, handler, error);
- }
- @Override
- public void onReceivedHttpAuthRequest(WebView view,
- HttpAuthHandler handler, String host, String realm) {
- mClient.onReceivedHttpAuthRequest(view, handler, host, realm);
- }
- @Override
- public void onFormResubmission(WebView view, Message dontResend,
- Message resend) {
- mClient.onFormResubmission(view, dontResend, resend);
- }
- @Override
- public void onReceivedError(WebView view, int errorCode,
- String description, String failingUrl) {
- mClient.onReceivedError(view, errorCode, description, failingUrl);
- }
- }
- // Subclass of WebChromeClient to display javascript dialogs.
- private class SubWindowChromeClient extends WebChromeClient {
- // This subwindow's tab.
- private final Tab mTab;
- // The main WebChromeClient.
- private final WebChromeClient mClient;
-
- SubWindowChromeClient(Tab t, WebChromeClient client) {
- mTab = t;
- mClient = client;
- }
- @Override
- public void onProgressChanged(WebView view, int newProgress) {
- mClient.onProgressChanged(view, newProgress);
- }
- @Override
- public boolean onCreateWindow(WebView view, boolean dialog,
- boolean userGesture, android.os.Message resultMsg) {
- return mClient.onCreateWindow(view, dialog, userGesture, resultMsg);
- }
- @Override
- public void onCloseWindow(WebView window) {
- if (Browser.DEBUG && window != mTab.mSubView) {
- throw new AssertionError("Can't close the window");
- }
- mActivity.dismissSubWindow(mTab);
- }
- }
- // Background WebChromeClient for focusing tabs
- private class BackgroundChromeClient extends WebChromeClient {
- @Override
- public void onRequestFocus(WebView view) {
- Tab t = getTabFromView(view);
- if (t != getCurrentTab()) {
- mActivity.showTab(t);
- }
- }
- }
-
- // Extra saved information for displaying the tab in the picker.
- public static class PickerData {
- String mUrl;
- String mTitle;
- float mScale;
- int mScrollX;
- int mScrollY;
- int mWidth;
- Picture mPicture;
- // This can be null. When a new picture comes in, this view should be
- // invalidated to show the new picture.
- FakeWebView mFakeWebView;
- }
-
- /**
- * Private class for maintaining Tabs with a main WebView and a subwindow.
- */
- public class Tab implements WebView.PictureListener {
- // Main WebView
- private WebView mMainView;
- // Subwindow WebView
- private WebView mSubView;
- // Subwindow container
- private View mSubViewContainer;
- // Subwindow callback
- private SubWindowClient mSubViewClient;
- // Subwindow chrome callback
- private SubWindowChromeClient mSubViewChromeClient;
- // Saved bundle for when we are running low on memory. It contains the
- // information needed to restore the WebView if the user goes back to
- // the tab.
- private Bundle mSavedState;
- // Data used when displaying the tab in the picker.
- private PickerData mPickerData;
-
- // Parent Tab. This is the Tab that created this Tab, or null
- // if the Tab was created by the UI
- private Tab mParentTab;
- // Tab that constructed by this Tab. This is used when this
- // Tab is destroyed, it clears all mParentTab values in the
- // children.
- private Vector<Tab> mChildTabs;
-
- private Boolean mCloseOnExit;
- // Application identifier used to find tabs that another application
- // wants to reuse.
- private String mAppId;
- // Keep the original url around to avoid killing the old WebView if the
- // url has not changed.
- private String mOriginalUrl;
-
- // Construct a new tab
- private Tab(WebView w, boolean closeOnExit, String appId, String url) {
- mMainView = w;
- mCloseOnExit = closeOnExit;
- mAppId = appId;
- mOriginalUrl = url;
- }
-
- /**
- * Return the top window of this tab; either the subwindow if it is not
- * null or the main window.
- * @return The top window of this tab.
- */
- public WebView getTopWindow() {
- if (mSubView != null) {
- return mSubView;
- }
- return mMainView;
- }
-
- /**
- * Return the main window of this tab. Note: if a tab is freed in the
- * background, this can return null. It is only guaranteed to be
- * non-null for the current tab.
- * @return The main WebView of this tab.
- */
- public WebView getWebView() {
- return mMainView;
- }
-
- /**
- * Return the subwindow of this tab or null if there is no subwindow.
- * @return The subwindow of this tab or null.
- */
- public WebView getSubWebView() {
- return mSubView;
- }
-
- /**
- * Return the subwindow container of this tab or null if there is no
- * subwindow.
- * @return The subwindow's container View.
- */
- public View getSubWebViewContainer() {
- return mSubViewContainer;
- }
-
- /**
- * Get the url of this tab. Valid after calling populatePickerData, but
- * before calling wipePickerData, or if the webview has been destroyed.
- *
- * @return The WebView's url or null.
- */
- public String getUrl() {
- if (mPickerData != null) {
- return mPickerData.mUrl;
- }
- return null;
- }
-
- /**
- * Get the title of this tab. Valid after calling populatePickerData,
- * but before calling wipePickerData, or if the webview has been
- * destroyed. If the url has no title, use the url instead.
- *
- * @return The WebView's title (or url) or null.
- */
- public String getTitle() {
- if (mPickerData != null) {
- return mPickerData.mTitle;
- }
- return null;
- }
-
- /**
- * Returns the picker data.
- */
- public PickerData getPickerData() {
- return mPickerData;
- }
-
- private void setParentTab(Tab parent) {
- mParentTab = parent;
- // This tab may have been freed due to low memory. If that is the
- // case, the parent tab index is already saved. If we are changing
- // that index (most likely due to removing the parent tab) we must
- // update the parent tab index in the saved Bundle.
- if (mSavedState != null) {
- if (parent == null) {
- mSavedState.remove(PARENTTAB);
- } else {
- mSavedState.putInt(PARENTTAB, getTabIndex(parent));
- }
- }
- }
-
- /**
- * When a Tab is created through the content of another Tab, then
- * we associate the Tabs.
- * @param child the Tab that was created from this Tab
- */
- public void addChildTab(Tab child) {
- if (mChildTabs == null) {
- mChildTabs = new Vector<Tab>();
- }
- mChildTabs.add(child);
- child.setParentTab(this);
- }
-
- private void removeFromTree() {
- // detach the children
- if (mChildTabs != null) {
- for(Tab t : mChildTabs) {
- t.setParentTab(null);
- }
- }
-
- // Find myself in my parent list
- if (mParentTab != null) {
- mParentTab.mChildTabs.remove(this);
- }
- }
-
- /**
- * If this Tab was created through another Tab, then this method
- * returns that Tab.
- * @return the Tab parent or null
- */
- public Tab getParentTab() {
- return mParentTab;
- }
-
- /**
- * Return whether this tab should be closed when it is backing out of
- * the first page.
- * @return TRUE if this tab should be closed when exit.
- */
- public boolean closeOnExit() {
- return mCloseOnExit;
- }
-
- public void onNewPicture(WebView view, Picture p) {
- if (mPickerData == null) {
- return;
- }
-
- mPickerData.mPicture = p;
- // Tell the FakeWebView to redraw.
- if (mPickerData.mFakeWebView != null) {
- mPickerData.mFakeWebView.invalidate();
- }
- }
- };
-
// Directory to store thumbnails for each WebView.
private final File mThumbnailDir;
*/
TabControl(BrowserActivity activity) {
mActivity = activity;
- mInflateService =
- ((LayoutInflater) activity.getSystemService(
- Context.LAYOUT_INFLATER_SERVICE));
mThumbnailDir = activity.getDir("thumbnails", 0);
}
if (t == null) {
return null;
}
- return t.mMainView;
+ return t.getWebView();
}
/**
if (t == null) {
return null;
}
- return t.mSubView != null ? t.mSubView : t.mMainView;
+ return t.getTopWindow();
}
/**
if (t == null) {
return null;
}
- return t.mSubView;
+ return t.getSubWebView();
}
/**
return mTabs.indexOf(tab);
}
+ boolean canCreateNewTab() {
+ return MAX_TABS != mTabs.size();
+ }
+
/**
* Create a new tab.
* @return The newly createTab or null if we have reached the maximum
return null;
}
final WebView w = createNewWebView();
+
// Create a new tab and add it to the tab list
- Tab t = new Tab(w, closeOnExit, appId, url);
+ Tab t = new Tab(mActivity, w, closeOnExit, appId, url);
mTabs.add(t);
// Initially put the tab in the background.
- putTabInBackground(t);
+ t.putInBackground();
return t;
}
if (t == null) {
return false;
}
+
// Only remove the tab if it is the current one.
if (getCurrentTab() == t) {
- putTabInBackground(t);
+ t.putInBackground();
+ mCurrentTab = -1;
}
- // Only destroy the WebView if it still exists.
- if (t.mMainView != null) {
- // Take down the sub window.
- dismissSubWindow(t);
- // Remove the WebView's settings from the BrowserSettings list of
- // observers.
- BrowserSettings.getInstance().deleteObserver(
- t.mMainView.getSettings());
- // Destroy the main view and subview
- t.mMainView.destroy();
- t.mMainView = null;
- }
+ // destroy the tab
+ t.destroy();
// clear it's references to parent and children
t.removeFromTree();
-
// Remove it from our list of tabs.
mTabs.remove(t);
// The tab indices have shifted, update all the saved state so we point
// to the correct index.
for (Tab tab : mTabs) {
- if (tab.mChildTabs != null) {
- for (Tab child : tab.mChildTabs) {
+ Vector<Tab> children = tab.getChildTabs();
+ if (children != null) {
+ for (Tab child : children) {
child.setParentTab(tab);
}
}
}
-
// This tab may have been pushed in to the background and then closed.
// If the saved state contains a picture file, delete the file.
- if (t.mSavedState != null) {
- if (t.mSavedState.containsKey(CURRPICTURE)) {
- new File(t.mSavedState.getString(CURRPICTURE)).delete();
+ Bundle savedState = t.getSavedState();
+ if (savedState != null) {
+ if (savedState.containsKey(Tab.CURRPICTURE)) {
+ new File(savedState.getString(Tab.CURRPICTURE)).delete();
}
}
// Remove it from the queue of viewed tabs.
mTabQueue.remove(t);
- mCurrentTab = -1;
return true;
}
/**
- * Clear the back/forward list for all the current tabs.
- */
- void clearHistory() {
- int size = getTabCount();
- for (int i = 0; i < size; i++) {
- Tab t = mTabs.get(i);
- // TODO: if a tab is freed due to low memory, its history is not
- // cleared here.
- if (t.mMainView != null) {
- t.mMainView.clearHistory();
- }
- if (t.mSubView != null) {
- t.mSubView.clearHistory();
- }
- }
- }
-
- /**
* Destroy all the tabs and subwindows
*/
void destroy() {
- BrowserSettings s = BrowserSettings.getInstance();
for (Tab t : mTabs) {
- if (t.mMainView != null) {
- dismissSubWindow(t);
- s.deleteObserver(t.mMainView.getSettings());
- t.mMainView.destroy();
- t.mMainView = null;
- }
+ t.destroy();
}
mTabs.clear();
mTabQueue.clear();
return mTabs.size();
}
- // Used for saving and restoring each Tab
- private static final String WEBVIEW = "webview";
- private static final String NUMTABS = "numTabs";
- private static final String CURRTAB = "currentTab";
- private static final String CURRURL = "currentUrl";
- private static final String CURRTITLE = "currentTitle";
- private static final String CURRWIDTH = "currentWidth";
- private static final String CURRPICTURE = "currentPicture";
- private static final String CLOSEONEXIT = "closeonexit";
- private static final String PARENTTAB = "parentTab";
- private static final String APPID = "appid";
- private static final String ORIGINALURL = "originalUrl";
/**
* Save the state of all the Tabs.
*/
void saveState(Bundle outState) {
final int numTabs = getTabCount();
- outState.putInt(NUMTABS, numTabs);
+ outState.putInt(Tab.NUMTABS, numTabs);
final int index = getCurrentIndex();
- outState.putInt(CURRTAB, (index >= 0 && index < numTabs) ? index : 0);
+ outState.putInt(Tab.CURRTAB, (index >= 0 && index < numTabs) ? index : 0);
for (int i = 0; i < numTabs; i++) {
final Tab t = getTab(i);
- if (saveState(t)) {
- outState.putBundle(WEBVIEW + i, t.mSavedState);
+ if (t.saveState()) {
+ outState.putBundle(Tab.WEBVIEW + i, t.getSavedState());
}
}
}
*/
boolean restoreState(Bundle inState) {
final int numTabs = (inState == null)
- ? -1 : inState.getInt(NUMTABS, -1);
+ ? -1 : inState.getInt(Tab.NUMTABS, -1);
if (numTabs == -1) {
return false;
} else {
- final int currentTab = inState.getInt(CURRTAB, -1);
+ final int currentTab = inState.getInt(Tab.CURRTAB, -1);
for (int i = 0; i < numTabs; i++) {
if (i == currentTab) {
Tab t = createNewTab();
// Me must set the current tab before restoring the state
// so that all the client classes are set.
setCurrentTab(t);
- if (!restoreState(inState.getBundle(WEBVIEW + i), t)) {
+ if (!t.restoreState(inState.getBundle(Tab.WEBVIEW + i))) {
Log.w(LOGTAG, "Fail in restoreState, load home page.");
- t.mMainView.loadUrl(BrowserSettings.getInstance()
+ t.getWebView().loadUrl(BrowserSettings.getInstance()
.getHomePage());
}
} else {
// Create a new tab and don't restore the state yet, add it
// to the tab list
- Tab t = new Tab(null, false, null, null);
- t.mSavedState = inState.getBundle(WEBVIEW + i);
- if (t.mSavedState != null) {
- populatePickerDataFromSavedState(t);
+ Tab t = new Tab(mActivity, null, false, null, null);
+ Bundle state = inState.getBundle(Tab.WEBVIEW + i);
+ if (state != null) {
+ t.setSavedState(state);
+ t.populatePickerDataFromSavedState();
// Need to maintain the app id and original url so we
// can possibly reuse this tab.
- t.mAppId = t.mSavedState.getString(APPID);
- t.mOriginalUrl = t.mSavedState.getString(ORIGINALURL);
+ t.setAppId(state.getString(Tab.APPID));
+ t.setOriginalUrl(state.getString(Tab.ORIGINALURL));
}
mTabs.add(t);
mTabQueue.add(t);
// Rebuild the tree of tabs. Do this after all tabs have been
// created/restored so that the parent tab exists.
for (int i = 0; i < numTabs; i++) {
- final Bundle b = inState.getBundle(WEBVIEW + i);
+ final Bundle b = inState.getBundle(Tab.WEBVIEW + i);
final Tab t = getTab(i);
if (b != null && t != null) {
- final int parentIndex = b.getInt(PARENTTAB, -1);
+ final int parentIndex = b.getInt(Tab.PARENTTAB, -1);
if (parentIndex != -1) {
final Tab parent = getTab(parentIndex);
if (parent != null) {
* WebView cache;
*/
void freeMemory() {
+ if (getTabCount() == 0) return;
+
// free the least frequently used background tab
- Tab t = getLeastUsedTab();
+ Tab t = getLeastUsedTab(getCurrentTab());
if (t != null) {
Log.w(LOGTAG, "Free a tab in the browser");
- freeTab(t);
- // force a gc
- System.gc();
+ // store the WebView's state.
+ t.saveState();
+ // destroy the tab
+ t.destroy();
return;
}
if (view != null) {
view.freeMemory();
}
- // force a gc
- System.gc();
}
- private Tab getLeastUsedTab() {
- // Don't do anything if we only have 1 tab.
- if (getTabCount() == 1) {
+ private Tab getLeastUsedTab(Tab current) {
+ // Don't do anything if we only have 1 tab or if the current tab is
+ // null.
+ if (getTabCount() == 1 || current == null) {
return null;
}
- // Rip through the queue starting at the beginning and teardown the
+ // Rip through the queue starting at the beginning and tear down the
// next available tab.
Tab t = null;
int i = 0;
}
do {
t = mTabQueue.get(i++);
- } while (i < queueSize && t != null && t.mMainView == null);
+ } while (i < queueSize
+ && ((t != null && t.getWebView() == null)
+ || t == current.getParentTab()));
// Don't do anything if the last remaining tab is the current one or if
// the last tab has been freed already.
- if (t == getCurrentTab() || t.mMainView == null) {
+ if (t == current || t.getWebView() == null) {
return null;
}
return t;
}
- private void freeTab(Tab t) {
- // Store the WebView's state.
- saveState(t);
-
- // Tear down the tab.
- dismissSubWindow(t);
- // Remove the WebView's settings from the BrowserSettings list of
- // observers.
- BrowserSettings.getInstance().deleteObserver(t.mMainView.getSettings());
- t.mMainView.destroy();
- t.mMainView = null;
- }
-
- /**
- * Create a new subwindow unless a subwindow already exists.
- * @return True if a new subwindow was created. False if one already exists.
- */
- void createSubWindow() {
- Tab t = getTab(mCurrentTab);
- if (t != null && t.mSubView == null) {
- final View v = mInflateService.inflate(R.layout.browser_subwindow, null);
- final WebView w = (WebView) v.findViewById(R.id.webview);
- w.setMapTrackballToArrowKeys(false); // use trackball directly
- final SubWindowClient subClient =
- new SubWindowClient(mActivity.getWebViewClient());
- final SubWindowChromeClient subChromeClient =
- new SubWindowChromeClient(t,
- mActivity.getWebChromeClient());
- w.setWebViewClient(subClient);
- w.setWebChromeClient(subChromeClient);
- w.setDownloadListener(mActivity);
- w.setOnCreateContextMenuListener(mActivity);
- final BrowserSettings s = BrowserSettings.getInstance();
- s.addObserver(w.getSettings()).update(s, null);
- t.mSubView = w;
- t.mSubViewClient = subClient;
- t.mSubViewChromeClient = subChromeClient;
- // FIXME: I really hate having to know the name of the view
- // containing the webview.
- t.mSubViewContainer = v.findViewById(R.id.subwindow_container);
- final ImageButton cancel =
- (ImageButton) v.findViewById(R.id.subwindow_close);
- cancel.setOnClickListener(new OnClickListener() {
- public void onClick(View v) {
- subChromeClient.onCloseWindow(w);
- }
- });
- }
- }
-
/**
* Show the tab that contains the given WebView.
* @param view The WebView used to find the tab.
final int size = getTabCount();
for (int i = 0; i < size; i++) {
final Tab t = getTab(i);
- if (t.mSubView == view || t.mMainView == view) {
+ if (t.getSubWebView() == view || t.getWebView() == view) {
return t;
}
}
final int size = getTabCount();
for (int i = 0; i < size; i++) {
final Tab t = getTab(i);
- if (id.equals(t.mAppId)) {
+ if (id.equals(t.getAppId())) {
+ return t;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Stop loading in all opened WebView including subWindows.
+ */
+ void stopAllLoading() {
+ final int size = getTabCount();
+ for (int i = 0; i < size; i++) {
+ final Tab t = getTab(i);
+ final WebView webview = t.getWebView();
+ if (webview != null) {
+ webview.stopLoading();
+ }
+ final WebView subview = t.getSubWebView();
+ if (subview != null) {
+ webview.stopLoading();
+ }
+ }
+ }
+
+ // This method checks if a non-app tab (one created within the browser)
+ // matches the given url.
+ private boolean tabMatchesUrl(Tab t, String url) {
+ if (t.getAppId() != null) {
+ return false;
+ }
+ WebView webview = t.getWebView();
+ if (webview == null) {
+ return false;
+ } else if (url.equals(webview.getUrl())
+ || url.equals(webview.getOriginalUrl())) {
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Return the tab that has no app id associated with it and the url of the
+ * tab matches the given url.
+ * @param url The url to search for.
+ */
+ Tab findUnusedTabWithUrl(String url) {
+ if (url == null) {
+ return null;
+ }
+ // Check the current tab first.
+ Tab t = getCurrentTab();
+ if (t != null && tabMatchesUrl(t, url)) {
+ return t;
+ }
+ // Now check all the rest.
+ final int size = getTabCount();
+ for (int i = 0; i < size; i++) {
+ t = getTab(i);
+ if (tabMatchesUrl(t, url)) {
return t;
}
}
* was deleted.
*/
boolean recreateWebView(Tab t, String url) {
- final WebView w = t.mMainView;
+ final WebView w = t.getWebView();
if (w != null) {
- if (url != null && url.equals(t.mOriginalUrl)) {
+ if (url != null && url.equals(t.getOriginalUrl())) {
// The original url matches the current url. Just go back to the
// first history item so we can load it faster than if we
// rebuilt the WebView.
return false;
}
}
- // Remove the settings object from the global settings and destroy
- // the WebView.
- BrowserSettings.getInstance().deleteObserver(
- t.mMainView.getSettings());
- t.mMainView.destroy();
+ t.destroy();
}
// Create a new WebView. If this tab is the current tab, we need to put
// back all the clients so force it to be the current tab.
- t.mMainView = createNewWebView();
+ t.setWebView(createNewWebView());
if (getCurrentTab() == t) {
setCurrentTab(t, true);
}
- // Clear the saved state except for the app id and close-on-exit
- // values.
- t.mSavedState = null;
- t.mPickerData = null;
+ // Clear the saved state and picker data
+ t.setSavedState(null);
+ t.clearPickerData();
// Save the new url in order to avoid deleting the WebView.
- t.mOriginalUrl = url;
+ t.setOriginalUrl(url);
return true;
}
private WebView createNewWebView() {
// Create a new WebView
WebView w = new WebView(mActivity);
+ w.setScrollbarFadingEnabled(true);
+ w.setScrollBarStyle(View.SCROLLBARS_OUTSIDE_OVERLAY);
w.setMapTrackballToArrowKeys(false); // use trackball directly
// Enable the built-in zoom
w.getSettings().setBuiltInZoomControls(true);
+ // Attach DownloadManager so that downloads can start in an active or
+ // a non-active window. This can happen when going to a site that does
+ // a redirect after a period of time. The user could have switched to
+ // another tab while waiting for the download to start.
+ w.setDownloadListener(mActivity);
// Add this WebView to the settings observer list and update the
// settings
final BrowserSettings s = BrowserSettings.getInstance();
s.addObserver(w.getSettings()).update(s, null);
+
+ // disable for now
+ //w.setDragTracker(new MeshTracker());
return w;
}
return setCurrentTab(newTab, false);
}
- /*package*/ void pauseCurrentTab() {
+ void pauseCurrentTab() {
Tab t = getCurrentTab();
if (t != null) {
- t.mMainView.onPause();
- if (t.mSubView != null) {
- t.mSubView.onPause();
- }
+ t.pause();
}
}
- /*package*/ void resumeCurrentTab() {
+ void resumeCurrentTab() {
Tab t = getCurrentTab();
if (t != null) {
- t.mMainView.onResume();
- if (t.mSubView != null) {
- t.mSubView.onResume();
- }
+ t.resume();
}
}
- private void putViewInForeground(WebView v, WebViewClient vc,
- WebChromeClient cc) {
- v.setWebViewClient(vc);
- v.setWebChromeClient(cc);
- v.setOnCreateContextMenuListener(mActivity);
- v.setDownloadListener(mActivity);
- v.onResume();
- }
-
- private void putViewInBackground(WebView v) {
- // Set an empty callback so that default actions are not triggered.
- v.setWebViewClient(mEmptyClient);
- v.setWebChromeClient(mBackgroundChromeClient);
- v.setOnCreateContextMenuListener(null);
- // Leave the DownloadManager attached so that downloads can start in
- // a non-active window. This can happen when going to a site that does
- // a redirect after a period of time. The user could have switched to
- // another tab while waiting for the download to start.
- v.setDownloadListener(mActivity);
- v.onPause();
- }
-
/**
* If force is true, this method skips the check for newTab == current.
*/
return true;
}
if (current != null) {
- // Remove the current WebView and the container of the subwindow
- putTabInBackground(current);
+ current.putInBackground();
+ mCurrentTab = -1;
}
-
if (newTab == null) {
return false;
}
}
mTabQueue.add(newTab);
- WebView mainView;
-
// Display the new current tab
mCurrentTab = mTabs.indexOf(newTab);
- mainView = newTab.mMainView;
+ WebView mainView = newTab.getWebView();
boolean needRestore = (mainView == null);
if (needRestore) {
// Same work as in createNewTab() except don't do new Tab()
- newTab.mMainView = mainView = createNewWebView();
- }
- putViewInForeground(mainView, mActivity.getWebViewClient(),
- mActivity.getWebChromeClient());
- // Add the subwindow if it exists
- if (newTab.mSubViewContainer != null) {
- putViewInForeground(newTab.mSubView, newTab.mSubViewClient,
- newTab.mSubViewChromeClient);
+ mainView = createNewWebView();
+ newTab.setWebView(mainView);
}
+ newTab.putInForeground();
if (needRestore) {
// Have to finish setCurrentTab work before calling restoreState
- if (!restoreState(newTab.mSavedState, newTab)) {
+ if (!newTab.restoreState(newTab.getSavedState())) {
mainView.loadUrl(BrowserSettings.getInstance().getHomePage());
}
}
return true;
}
-
- /*
- * Put the tab in the background using all the empty/background clients.
- */
- private void putTabInBackground(Tab t) {
- putViewInBackground(t.mMainView);
- if (t.mSubView != null) {
- putViewInBackground(t.mSubView);
- }
- }
-
- /*
- * Dismiss the subwindow for the given tab.
- */
- void dismissSubWindow(Tab t) {
- if (t != null && t.mSubView != null) {
- BrowserSettings.getInstance().deleteObserver(
- t.mSubView.getSettings());
- t.mSubView.destroy();
- t.mSubView = null;
- t.mSubViewContainer = null;
- }
- }
-
- /**
- * Ensure that Tab t has data to display in the tab picker.
- * @param t Tab to populate.
- */
- /* package */ void populatePickerData(Tab t) {
- if (t == null) {
- return;
- }
-
- // mMainView == null indicates that the tab has been freed.
- if (t.mMainView == null) {
- populatePickerDataFromSavedState(t);
- return;
- }
-
- // FIXME: The only place we cared about subwindow was for
- // bookmarking (i.e. not when saving state). Was this deliberate?
- final WebBackForwardList list = t.mMainView.copyBackForwardList();
- final WebHistoryItem item =
- list != null ? list.getCurrentItem() : null;
- populatePickerData(t, item);
-
- // This method is only called during the tab picker creation. At this
- // point we need to listen for new pictures since the WebView is still
- // active.
- final WebView w = t.getTopWindow();
- w.setPictureListener(t);
- // Capture the picture here instead of populatePickerData since it can
- // be called when saving the state of a tab.
- t.mPickerData.mPicture = w.capturePicture();
- }
-
- // Create the PickerData and populate it using the saved state of the tab.
- private void populatePickerDataFromSavedState(Tab t) {
- if (t.mSavedState == null) {
- return;
- }
-
- final PickerData data = new PickerData();
- final Bundle state = t.mSavedState;
- data.mUrl = state.getString(CURRURL);
- data.mTitle = state.getString(CURRTITLE);
- data.mWidth = state.getInt(CURRWIDTH, 0);
- // XXX: These keys are from WebView.savePicture so if they change, this
- // will break.
- data.mScale = state.getFloat("scale", 1.0f);
- data.mScrollX = state.getInt("scrollX", 0);
- data.mScrollY = state.getInt("scrollY", 0);
-
- if (state.containsKey(CURRPICTURE)) {
- final File f = new File(t.mSavedState.getString(CURRPICTURE));
- try {
- final FileInputStream in = new FileInputStream(f);
- data.mPicture = Picture.createFromStream(in);
- in.close();
- } catch (Exception ex) {
- // Ignore any problems with inflating the picture. We just
- // won't draw anything.
- }
- }
-
- // Set the tab's picker data.
- t.mPickerData = data;
- }
-
- // Populate the picker data using the given history item and the current
- // top WebView.
- private void populatePickerData(Tab t, WebHistoryItem item) {
- final PickerData data = new PickerData();
- if (item != null) {
- data.mUrl = item.getUrl();
- data.mTitle = item.getTitle();
- if (data.mTitle == null) {
- data.mTitle = data.mUrl;
- }
- }
- // We want to display the top window in the tab picker but use the url
- // and title of the main window.
- final WebView w = t.getTopWindow();
- data.mWidth = w.getWidth();
- data.mScale = w.getScale();
- data.mScrollX = w.getScrollX();
- data.mScrollY = w.getScrollY();
-
- // Remember the old picture if possible.
- if (t.mPickerData != null) {
- data.mPicture = t.mPickerData.mPicture;
- }
- t.mPickerData = data;
- }
-
- /**
- * Clean up the data for all tabs.
- */
- /* package */ void wipeAllPickerData() {
- int size = getTabCount();
- for (int i = 0; i < size; i++) {
- final Tab t = getTab(i);
- if (t != null && t.mSavedState == null) {
- t.mPickerData = null;
- }
- if (t.mMainView != null) {
- // Clear the picture listeners.
- t.mMainView.setPictureListener(null);
- if (t.mSubView != null) {
- t.mSubView.setPictureListener(null);
- }
- }
- }
- }
-
- /*
- * Save the state for an individual tab.
- */
- private boolean saveState(Tab t) {
- if (t != null) {
- final WebView w = t.mMainView;
- // If the WebView is null it means we ran low on memory and we
- // already stored the saved state in mSavedState.
- if (w == null) {
- return true;
- }
- final Bundle b = new Bundle();
- final WebBackForwardList list = w.saveState(b);
- if (list != null) {
- final File f = new File(mThumbnailDir, w.hashCode()
- + "_pic.save");
- if (w.savePicture(b, f)) {
- b.putString(CURRPICTURE, f.getPath());
- }
- }
-
- // Store some extra info for displaying the tab in the picker.
- final WebHistoryItem item =
- list != null ? list.getCurrentItem() : null;
- populatePickerData(t, item);
-
- // XXX: WebView.savePicture stores the scale and scroll positions
- // in the bundle so we don't have to do it here.
- final PickerData data = t.mPickerData;
- if (data.mUrl != null) {
- b.putString(CURRURL, data.mUrl);
- }
- if (data.mTitle != null) {
- b.putString(CURRTITLE, data.mTitle);
- }
- b.putInt(CURRWIDTH, data.mWidth);
- b.putBoolean(CLOSEONEXIT, t.mCloseOnExit);
- if (t.mAppId != null) {
- b.putString(APPID, t.mAppId);
- }
- if (t.mOriginalUrl != null) {
- b.putString(ORIGINALURL, t.mOriginalUrl);
- }
-
- // Remember the parent tab so the relationship can be restored.
- if (t.mParentTab != null) {
- b.putInt(PARENTTAB, getTabIndex(t.mParentTab));
- }
-
- // Remember the saved state.
- t.mSavedState = b;
- return true;
- }
- return false;
- }
-
- /*
- * Restore the state of the tab.
- */
- private boolean restoreState(Bundle b, Tab t) {
- if (b == null) {
- return false;
- }
- // Restore the internal state even if the WebView fails to restore.
- // This will maintain the app id, original url and close-on-exit values.
- t.mSavedState = null;
- t.mPickerData = null;
- t.mCloseOnExit = b.getBoolean(CLOSEONEXIT);
- t.mAppId = b.getString(APPID);
- t.mOriginalUrl = b.getString(ORIGINALURL);
-
- final WebView w = t.mMainView;
- final WebBackForwardList list = w.restoreState(b);
- if (list == null) {
- return false;
- }
- if (b.containsKey(CURRPICTURE)) {
- final File f = new File(b.getString(CURRPICTURE));
- w.restorePicture(b, f);
- f.delete();
- }
- return true;
- }
}
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