ImageInputDialog.java

package org.geogebra.web.web.gui.dialog.image;

import org.geogebra.common.main.App;
import org.geogebra.web.html5.Browser;
import org.geogebra.web.html5.main.AppW;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.user.client.ui.Label;

public class ImageInputDialog extends UploadImageDialog {
	
	private static final int PREVIEW_HEIGHT = 155;
	private static final int PREVIEW_WIDTH = 213;
	
	private WebCamInputPanel webcamPanel;	
	private Label webcam;
	
	public ImageInputDialog(App app) {
		super((AppW) app, PREVIEW_WIDTH, PREVIEW_HEIGHT);
	}
	
	@Override
	protected void initGUI() {
		super.initGUI();
		if (webcamSupported()) {
			listPanel.add(webcam = new Label(""));
		}
	}
	
	protected boolean webcamSupported() {
		return Browser.supportsWebcam();
	}

	@Override
	protected void initActions() {
		super.initActions();
		if(webcam != null){
			webcam.addClickHandler(this);
		}
	}
	
	@Override
	public void setLabels() {
		super.setLabels();
		if(webcam != null){
			webcam.setText(app.getLocalization().getMenu("Webcam"));
		}
	}
	
	
	@Override
	protected void uploadClicked() {
		super.uploadClicked();
		if(webcam != null){
			webcam.removeStyleDependentName("highlighted");
			if (webcamPanel != null) {
				webcamPanel.stopVideo();
	    		webcamPanel.clear();
	    		webcamPanel = null;
			}
		}
		imageUnavailable();
	}
	
	protected void webcamClicked() {
		
		webcam.addStyleDependentName("highlighted");
		upload.removeStyleDependentName("highlighted");
		mayCenter = false;
		if(webcamPanel == null){
			webcamPanel = new WebCamInputPanel(app);
		}else{
			webcamPanel.startVideo();
		}
    	inputPanel.setWidget(webcamPanel);
    	imageAvailable();
	}
	
	@Override
	public void onClick(ClickEvent event) {
		Object source = event.getSource();
		if (source == insertBtn) {
	    	String data;
	    	String name;
	    	boolean camera = false;
	    	if (webcamPanel == null) { // file upload
	    		data = uploadImagePanel.getImageDataURL();
	    		name = uploadImagePanel.getFileName();
	    		
	    	} else { // webcam
	    		data = webcamPanel.getImageDataURL();
	    		name = "webcam";
	    		camera = true;
	    	}
			if (location != null && !location.isLabelSet()) {
				location.setLabel(null);
	    	}
	    	if(camera){
				app.imageDropHappened(name, data, "", location,
						webcamPanel.getCanvasWidth(),
						webcamPanel.getCanvasHeight());
	    	}else{
				app.imageDropHappened(name, data, "", location, 0, 0);
	    	}
	    	hide();
	    } else if (source == cancelBtn) {
	      	app.getImageManager().setPreventAuxImage(false);
	  	   	hide();
	    } else if (source == upload) {
	    	uploadClicked();
	    } else if (webcam != null && source == webcam) {
	    	webcamClicked();
	    }
	}
	
	@Override
	public void hide() {
		super.hide();
		this.mayCenter = true;
		if (this.uploadImagePanel != null) {
			this.uploadImagePanel.resetPreview();
		}
		if(this.webcamPanel != null){
			this.webcamPanel.stopVideo();
		}
	}
}