org.rstudio.studio.client.pdfviewer.ui.PDFViewerApplicationWindow.java Source code

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Here is the source code for org.rstudio.studio.client.pdfviewer.ui.PDFViewerApplicationWindow.java

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/*
 * PDFViewerApplicationWindow.java
 *
 * Copyright (C) 2009-12 by RStudio, Inc.
 *
 * Unless you have received this program directly from RStudio pursuant
 * to the terms of a commercial license agreement with RStudio, then
 * this program is licensed to you under the terms of version 3 of the
 * GNU Affero General Public License. This program is distributed WITHOUT
 * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
 * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
 *
 */
package org.rstudio.studio.client.pdfviewer.ui;

import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.ScheduledCommand;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.LayoutPanel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import org.rstudio.studio.client.application.events.EventBus;
import org.rstudio.studio.client.common.satellite.SatelliteWindow;
import org.rstudio.studio.client.pdfviewer.PDFViewerPresenter;
import org.rstudio.studio.client.pdfviewer.events.InitCompleteEvent;
import org.rstudio.studio.client.pdfviewer.model.PDFViewerParams;
import org.rstudio.studio.client.workbench.ui.FontSizeManager;

@Singleton
public class PDFViewerApplicationWindow extends SatelliteWindow implements PDFViewerApplicationView {

    @Inject
    public PDFViewerApplicationWindow(Provider<PDFViewerPresenter> pPresenter, Provider<EventBus> pEventBus,
            Provider<FontSizeManager> pFontSizeManager) {
        super(pEventBus, pFontSizeManager);
        pPresenter_ = pPresenter;
    }

    @Override
    protected void onInitialize(LayoutPanel mainPanel, JavaScriptObject params) {
        Window.setTitle("RStudio: Compile PDF");

        // create the presenter and activate it with the passed params
        PDFViewerParams pdfParams = params.<PDFViewerParams>cast();
        presenter_ = pPresenter_.get();
        presenter_.addInitCompleteHandler(new InitCompleteEvent.Handler() {
            @Override
            public void onInitComplete(InitCompleteEvent event) {
                initCompleted_ = true;
                fireEvent(new InitCompleteEvent());
            }
        });
        presenter_.onActivated(pdfParams);

        // PDF.js doesn't work correctly unless the viewer takes its natural
        // height and the window is allowed to scroll. So get rid of the main
        // panel and add the PDFViewer directly to the root panel.
        mainPanel.setVisible(false);
        RootPanel.get().add(presenter_);
    }

    @Override
    protected boolean allowScrolling() {
        return true;
    }

    @Override
    public void reactivate(JavaScriptObject params) {
        if (params != null) {
            PDFViewerParams pdfParams = params.<PDFViewerParams>cast();
            presenter_.onActivated(pdfParams);
        }
    }

    @Override
    public Widget getWidget() {
        return this;
    }

    @Override
    public HandlerRegistration addInitCompleteHandler(final InitCompleteEvent.Handler handler) {
        if (initCompleted_) {
            Scheduler.get().scheduleDeferred(new ScheduledCommand() {
                @Override
                public void execute() {
                    handler.onInitComplete(new InitCompleteEvent());
                }
            });
        }
        return addHandler(handler, InitCompleteEvent.TYPE);
    }

    private boolean initCompleted_;
    private final Provider<PDFViewerPresenter> pPresenter_;
    private PDFViewerPresenter presenter_;

}