eu.future.earth.gwt.client.ui.button.TouchToggleButton Maven / Gradle / Ivy

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package eu.future.earth.gwt.client.ui.button;

import com.google.gwt.dom.client.Element;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.HasClickHandlers;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FocusPanel;
import com.google.gwt.user.client.ui.Focusable;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.InlineLabel;

public class TouchToggleButton extends Composite implements HasClickHandlers, ClickHandler, Focusable {

	protected FocusPanel main = new FocusPanel();

	private InlineLabel textSpan = new InlineLabel();

	public TouchToggleButton() {
		this(null, null, UiType.Touch);
	}

	public TouchToggleButton(UiType forTouch) {
		this(null, null, forTouch);
	}

	public TouchToggleButton(String newText) {
		this(newText, null, UiType.Touch);
	}

	public TouchToggleButton(String newText, UiType forTouch) {
		this(newText, null, forTouch);
	}

	public TouchToggleButton(Image newImage) {
		this(null, newImage);
	}

	public TouchToggleButton(Image newImage, UiType forTouch) {
		this(null, newImage, forTouch);
	}

	public TouchToggleButton(String newText, Image newImage) {
		this(newText, newImage, UiType.Touch);
	}

	public TouchToggleButton(String newText, Image newImage, UiType forTouch) {
		this(newText, null, newImage, forTouch);
	}

	public TouchToggleButton(String newText, String newSelectedText) {
		this(newText, newSelectedText, null, UiType.Regular);
	}

	private final String text;

	private final String deselected;

	public TouchToggleButton(String newText, String newDeselected, Image newImage, UiType forTouch) {
		this(newText, newDeselected, newImage, null, forTouch);
	}

	private final Image image;

	private final Image deselectImage;

	public TouchToggleButton(String newText, String newDeselected, Image newImage, Image newNotImage, UiType forTouch) {
		super();
		initWidget(main);
		text = newText;
		image = newImage;
		deselectImage = newNotImage;
		deselected = newDeselected;
		super.addStyleName("ftr-button");
		super.addStyleName("ftr-toggle");

		if (UiType.Touch.equals(forTouch)) {
			super.addStyleName("touch");
		} else {
			super.addStyleName("notouch");
		}
		main.addClickHandler(this);
		setImage(newImage);
		if (newText != null) {
			main.getElement().appendChild(textSpan.getElement());
			textSpan.setText(newText);
		}
		setState();
	}

	protected void addStyleNameToMain(String newStyle) {
		main.addStyleName(newStyle);
	}

	protected void removeStyleNameToMain(String newStyle) {
		main.removeStyleName(newStyle);
	}

	private boolean selected = false;

	private Element imagePlaced = null;

	public void setImage(Image newImage) {
		if (imagePlaced != null) {
			main.getElement().removeChild(imagePlaced);
		}

		if (newImage != null) {
			imagePlaced = newImage.getElement();
			main.getElement().insertFirst(imagePlaced);
		}
	}

	public void setText(String newText) {
		textSpan.setText(newText);
		if (!main.getElement().isOrHasChild(textSpan.getElement())) {
			main.getElement().appendChild(textSpan.getElement());
		}
	}

	private boolean enabled = true;

	public void setEnabled(boolean newState) {
		if (enabled != newState) {
			if (enabled) {

				super.addStyleName("ftr-disabled");
			} else {
				super.removeStyleName("ftr-disabled");

			}
			enabled = newState;

		}
	}

	public boolean isEnabled() {
		return enabled;
	}

	@Override
	public void onBrowserEvent(Event event) {
		if (enabled) {
			selected = !selected;
			setState();
			super.onBrowserEvent(event);
		} else {
			event.preventDefault();
		}
	}

	@Override
	public HandlerRegistration addClickHandler(ClickHandler handler) {
		return addHandler(handler, ClickEvent.getType());
	}

	@Override
	public void onClick(ClickEvent event) {

	}

	@Override
	public int getTabIndex() {
		return main.getTabIndex();
	}

	@Override
	public void setAccessKey(char key) {
		main.setAccessKey(key);
	}

	@Override
	public void setFocus(boolean focused) {
		main.setFocus(focused);
	}

	@Override
	public void setTabIndex(int index) {
		main.setTabIndex(index);
	}

	public boolean isSelected() {
		return selected;
	}

	public void setSelected(boolean newSelected) {
		if (selected != newSelected) {
			selected = newSelected;
			setState();
		}
	}

	private void setState() {
		if (selected) {
			super.addStyleName("ftr-active");
			if (text != null) {
				textSpan.setText(text);
			}
			if (deselectImage != null) {
				setImage(image);
			}
		} else {
			super.removeStyleName("ftr-active");
			if (deselected != null) {
				textSpan.setText(deselected);
			}
			if (deselectImage != null) {
				setImage(deselectImage);
			}
		}
	}

}