Java Code Examples for org.chromium.content.browser.ContentViewCore#getWebContents()

/**
 * Starts showing a context menu for {@code view} based on {@code params}.
 * @param contentViewCore The {@link ContentViewCore} to show the menu to.
 * @param params          The {@link ContextMenuParams} that indicate what menu items to show.
 */
@CalledByNative
private boolean showContextMenu(ContentViewCore contentViewCore, ContextMenuParams params) {
    final View view = contentViewCore.getContainerView();

    if (view == null
            || view.getVisibility() != View.VISIBLE
            || view.getParent() == null) {
        return false;
    }

    mCurrentContextMenuParams = params;

    view.setOnCreateContextMenuListener(this);
    if (view.showContextMenu()) {
        WebContents webContents = contentViewCore.getWebContents();
        RecordHistogram.recordBooleanHistogram(
                "ContextMenu.Shown", webContents != null);
        if (webContents != null) webContents.onContextMenuOpened();
        return true;
    }
    return false;
}
 

/**
 * Starts showing a context menu for {@code view} based on {@code params}.
 * @param contentViewCore The {@link ContentViewCore} to show the menu to.
 * @param params          The {@link ContextMenuParams} that indicate what menu items to show.
 */
@CalledByNative
private void showContextMenu(ContentViewCore contentViewCore, ContextMenuParams params) {
    final View view = contentViewCore.getContainerView();

    if (view == null
            || view.getVisibility() != View.VISIBLE
            || view.getParent() == null) {
        return;
    }

    mCurrentContextMenuParams = params;

    view.setOnCreateContextMenuListener(this);
    if (view.showContextMenu()) {
        WebContents webContents = contentViewCore.getWebContents();
        RecordHistogram.recordBooleanHistogram(
                "ContextMenu.Shown", webContents != null);
    }
}
 

/**
 * Expands the current selection by the specified amounts.
 * @param selectionStartAdjust The start offset adjustment of the selection to use to highlight
 *                             the search term.
 * @param selectionEndAdjust The end offset adjustment of the selection to use to highlight
 *                           the search term.
 */
void adjustSelection(int selectionStartAdjust, int selectionEndAdjust) {
    // TODO(donnd): add code to verify that the selection is still valid before changing it.
    // crbug.com/508354

    if (selectionStartAdjust == 0 && selectionEndAdjust == 0) return;
    ContentViewCore basePageContentView = getBaseContentView();
    if (basePageContentView != null && basePageContentView.getWebContents() != null) {
        mDidExpandSelection = true;
        basePageContentView.getWebContents().adjustSelectionByCharacterOffset(
                selectionStartAdjust, selectionEndAdjust);
    }
}
 

/**
 * Expands the current selection by the specified amounts.
 * @param selectionStartAdjust The start offset adjustment of the selection to use to highlight
 *                             the search term.
 * @param selectionEndAdjust The end offset adjustment of the selection to use to highlight
 *                           the search term.
 */
void adjustSelection(int selectionStartAdjust, int selectionEndAdjust) {
    // TODO(donnd): add code to verify that the selection is still valid before changing it.
    // crbug.com/508354

    if (selectionStartAdjust == 0 && selectionEndAdjust == 0) return;
    ContentViewCore basePageContentView = getBaseContentView();
    if (basePageContentView != null && basePageContentView.getWebContents() != null) {
        mDidExpandSelection = true;
        basePageContentView.getWebContents().adjustSelectionByCharacterOffset(
                selectionStartAdjust, selectionEndAdjust);
    }
}
 

/**
 * @return The Base Page's {@link WebContents}, or {@code null} if there is no current tab or
 *         the current tab has no {@link ContentViewCore}.
 */
WebContents getBaseWebContents() {
    Tab currentTab = mActivity.getActivityTab();
    if (currentTab == null) return null;

    ContentViewCore contentViewCore = currentTab.getContentViewCore();
    if (contentViewCore == null) return null;

    return contentViewCore.getWebContents();
}
 

@Override
public OverlayPanelContent createNewOverlayPanelContent() {
    OverlayContentDelegate delegate = new OverlayContentDelegate() {
        /**
         * Track if a navigation/load is the first one for this content.
         */
        private boolean mIsInitialLoad = true;

        @Override
        public void onContentViewCreated(ContentViewCore contentView) {
            mContentViewDelegate.setOverlayPanelContentViewCore(contentView);

            WebContents distilledWebContents = contentView.getWebContents();
            if (distilledWebContents == null) return;

            WebContents sourceWebContents = mManagerDelegate.getBasePageWebContents();
            if (sourceWebContents == null) return;

            DomDistillerTabUtils.distillAndView(sourceWebContents, distilledWebContents);
        }

        @Override
        public void onContentViewDestroyed() {
            mContentViewDelegate.releaseOverlayPanelContentViewCore();
            mIsInitialLoad = true;
        }

        @Override
        public boolean shouldInterceptNavigation(ExternalNavigationHandler externalNavHandler,
                NavigationParams navigationParams) {
            // The initial load will be the distilled content; don't try to open a new tab if
            // this is the case. All other navigations on distilled pages will come from link
            // clicks.
            if (mIsInitialLoad) {
                mIsInitialLoad = false;
                return true;
            }
            if (!navigationParams.isExternalProtocol) {
                mManagerDelegate.createNewTab(navigationParams.url);
                return false;
            }
            return true;
        }
    };

    return new OverlayPanelContent(delegate, new OverlayContentProgressObserver(), mActivity);
}
 

@Override
public OverlayPanelContent createNewOverlayPanelContent() {
    OverlayContentDelegate delegate = new OverlayContentDelegate() {
        /**
         * Track if a navigation/load is the first one for this content.
         */
        private boolean mIsInitialLoad = true;

        @Override
        public void onContentViewCreated(ContentViewCore contentView) {
            mContentViewDelegate.setOverlayPanelContentViewCore(contentView);

            WebContents distilledWebContents = contentView.getWebContents();
            if (distilledWebContents == null) return;

            WebContents sourceWebContents = mManagerDelegate.getBasePageWebContents();
            if (sourceWebContents == null) return;

            DomDistillerTabUtils.distillAndView(sourceWebContents, distilledWebContents);
        }

        @Override
        public void onContentViewDestroyed() {
            mContentViewDelegate.releaseOverlayPanelContentViewCore();
            mIsInitialLoad = true;
        }

        @Override
        public boolean shouldInterceptNavigation(ExternalNavigationHandler externalNavHandler,
                NavigationParams navigationParams) {
            // The initial load will be the distilled content; don't try to open a new tab if
            // this is the case. All other navigations on distilled pages will come from link
            // clicks.
            if (mIsInitialLoad) {
                mIsInitialLoad = false;
                return true;
            }
            if (!navigationParams.isExternalProtocol) {
                mManagerDelegate.createNewTab(navigationParams.url);
                return false;
            }
            return true;
        }
    };

    return new OverlayPanelContent(delegate, new OverlayContentProgressObserver(), mActivity);
}
 

/**
 * Starts showing a context menu for {@code view} based on {@code params}.
 * @param contentViewCore The {@link ContentViewCore} to show the menu to.
 * @param params          The {@link ContextMenuParams} that indicate what menu items to show.
 */
@CalledByNative
private void showContextMenu(final ContentViewCore contentViewCore, ContextMenuParams params) {
    if (params.isFile()) return;
    View view = contentViewCore.getContainerView();
    final WindowAndroid windowAndroid = contentViewCore.getWindowAndroid();

    if (view == null || view.getVisibility() != View.VISIBLE || view.getParent() == null
            || windowAndroid == null || windowAndroid.getActivity().get() == null
            || mPopulator == null) {
        return;
    }

    mCurrentContextMenuParams = params;
    mActivity = windowAndroid.getActivity().get();
    mCallback = new Callback<Integer>() {
        @Override
        public void onResult(Integer result) {
            mPopulator.onItemSelected(
                    ContextMenuHelper.this, mCurrentContextMenuParams, result);
        }
    };
    mOnMenuShown = new Runnable() {
        @Override
        public void run() {
            WebContents webContents = contentViewCore.getWebContents();
            RecordHistogram.recordBooleanHistogram("ContextMenu.Shown", webContents != null);
        }
    };
    mOnMenuClosed = new Runnable() {
        @Override
        public void run() {
            if (mNativeContextMenuHelper == 0) return;
            nativeOnContextMenuClosed(mNativeContextMenuHelper);
        }
    };

    if (ChromeFeatureList.isEnabled(ChromeFeatureList.CUSTOM_CONTEXT_MENU)) {
        List<Pair<Integer, List<ContextMenuItem>>> items =
                mPopulator.buildContextMenu(null, mActivity, mCurrentContextMenuParams);
        if (items.isEmpty()) {
            ThreadUtils.postOnUiThread(mOnMenuClosed);
            return;
        }

        final ContextMenuUi menuUi = new TabularContextMenuUi(new Runnable() {
            @Override
            public void run() {
                shareImageDirectly(ShareHelper.getLastShareComponentName());
            }
        });
        menuUi.displayMenu(mActivity, mCurrentContextMenuParams, items, mCallback, mOnMenuShown,
                mOnMenuClosed);
        if (mCurrentContextMenuParams.isImage()) {
            getThumbnail(new Callback<Bitmap>() {
                @Override
                public void onResult(Bitmap result) {
                    ((TabularContextMenuUi) menuUi).onImageThumbnailRetrieved(result);
                }
            });
        }
        return;
    }

    // The Platform Context Menu requires the listener within this hepler since this helper and
    // provides context menu for us to show.
    view.setOnCreateContextMenuListener(this);
    if (view.showContextMenu()) {
        mOnMenuShown.run();
        windowAndroid.addContextMenuCloseListener(new OnCloseContextMenuListener() {
            @Override
            public void onContextMenuClosed() {
                mOnMenuClosed.run();
                windowAndroid.removeContextMenuCloseListener(this);
            }
        });
    }
}
 

@Override
public OverlayPanelContent createNewOverlayPanelContent() {
    OverlayContentDelegate delegate = new OverlayContentDelegate() {
        /**
         * Track if a navigation/load is the first one for this content.
         */
        private boolean mIsInitialLoad = true;

        @Override
        public void onContentViewCreated(ContentViewCore contentView) {
            mContentViewDelegate.setOverlayPanelContentViewCore(contentView);

            WebContents distilledWebContents = contentView.getWebContents();
            if (distilledWebContents == null) {
                closePanel(StateChangeReason.UNKNOWN, false);
                return;
            }

            WebContents sourceWebContents = mManagerDelegate.getBasePageWebContents();
            if (sourceWebContents == null) {
                closePanel(StateChangeReason.UNKNOWN, false);
                return;
            }

            DomDistillerTabUtils.distillAndView(sourceWebContents, distilledWebContents);
        }

        @Override
        public void onContentViewDestroyed() {
            mContentViewDelegate.releaseOverlayPanelContentViewCore();
            mIsInitialLoad = true;
        }

        @Override
        public boolean shouldInterceptNavigation(ExternalNavigationHandler externalNavHandler,
                NavigationParams navigationParams) {
            // The initial load will be the distilled content; don't try to open a new tab if
            // this is the case. All other navigations on distilled pages will come from link
            // clicks.
            if (mIsInitialLoad) {
                mIsInitialLoad = false;
                return true;
            }
            if (!navigationParams.isExternalProtocol) {
                mManagerDelegate.createNewTab(navigationParams.url);
                return false;
            }
            return true;
        }
    };

    return new OverlayPanelContent(delegate, new OverlayContentProgressObserver(), mActivity);
}