Examples with DocumentActivity org.chromium.chrome.browser.document.DocumentActivity used on opensource projects

Example 1 with DocumentActivity

use of org.chromium.chrome.browser.document.DocumentActivity in project AndroidChromium by JackyAndroid.

the class DocumentTabModelImpl method getTabAt.

@Override
public Tab getTabAt(int index) {
    if (index < 0 || index >= getCount())
        return null;
    // Return a live tab if the corresponding DocumentActivity is currently alive.
    int tabId = mTabIdList.get(index);
    List<WeakReference<Activity>> activities = ApplicationStatus.getRunningActivities();
    for (WeakReference<Activity> activityRef : activities) {
        Activity activity = activityRef.get();
        if (!(activity instanceof DocumentActivity) || !mActivityDelegate.isValidActivity(isIncognito(), activity.getIntent())) {
            continue;
        }
        Tab tab = ((DocumentActivity) activity).getActivityTab();
        int documentId = tab == null ? Tab.INVALID_TAB_ID : tab.getId();
        if (documentId == tabId)
            return tab;
    }
    // Try to create a Tab that will hold the Tab's info.
    Entry entry = mEntryMap.get(tabId);
    assert entry != null;
    // If a tab has already been initialized, use that.
    if (entry.placeholderTab != null && entry.placeholderTab.isInitialized()) {
        return entry.placeholderTab;
    }
    // Create a frozen Tab if we are capable, or if the previous Tab is just a placeholder.
    if (entry.getTabState() != null && isNativeInitialized() && (entry.placeholderTab == null || !entry.placeholderTab.isInitialized())) {
        entry.placeholderTab = getTabCreator(isIncognito()).createFrozenTab(entry.getTabState(), entry.tabId, TabModel.INVALID_TAB_INDEX);
        entry.placeholderTab.initializeNative();
    }
    // Create a placeholder Tab that just has the ID.
    if (entry.placeholderTab == null) {
        entry.placeholderTab = new Tab(tabId, isIncognito(), null);
    }
    return entry.placeholderTab;
}