InputDialogRadiusD.java example

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geogebra-master
package org.geogebra.desktop.gui.dialog;

import java.awt.event.ActionEvent;
import java.awt.event.WindowEvent;

import org.geogebra.common.gui.InputHandler;
import org.geogebra.common.gui.dialog.handler.NumberInputHandler;
import org.geogebra.common.kernel.Construction;
import org.geogebra.common.kernel.Kernel;
import org.geogebra.common.kernel.geos.GeoElement;
import org.geogebra.common.kernel.geos.GeoNumberValue;
import org.geogebra.common.util.AsyncOperation;
import org.geogebra.desktop.gui.GuiManagerD;
import org.geogebra.desktop.main.AppD;

/**
 * abstract class for input radius for any circle
 * 
 * @author mathieu
 * 
 */
public abstract class InputDialogRadiusD extends InputDialogD {

	/** current kernel */
	protected Kernel kernel;

	/**
	 * 
	 * @param app
	 * @param title
	 * @param handler
	 * @param kernel
	 */
	public InputDialogRadiusD(AppD app, String title, InputHandler handler,
			Kernel kernel) {
		super(app, app.getLocalization().getMenu("Radius"), title, "", false,
				handler);

		this.kernel = kernel;
	}

	/**
	 * Handles button clicks for dialog.
	 */
	@Override
	public void actionPerformed(ActionEvent e) {
		Object source = e.getSource();

		try {
			if (source == btOK || source == inputPanel.getTextComponent()) {
				processInput();
			} else if (source == btApply) {
				processInput();
			} else if (source == btCancel) {
				setVisibleForTools(false);
			}
		} catch (Exception ex) {
			// do nothing on uninitializedValue
			setVisibleForTools(false);
		}
	}

	private void processInput() {

		// avoid labeling of num
		final Construction cons = kernel.getConstruction();
		final boolean oldVal = cons.isSuppressLabelsActive();
		cons.setSuppressLabelCreation(true);

		getInputHandler().processInput(inputPanel.getText(), this,
				new AsyncOperation<Boolean>() {

					@Override
					public void callback(Boolean ok) {
						cons.setSuppressLabelCreation(oldVal);

						if (ok) {
							GeoElement circle = createOutput(
									((NumberInputHandler) getInputHandler())
											.getNum());
							GeoElement[] geos = { circle };
							app.storeUndoInfoAndStateForModeStarting();
							kernel.getApplication().getActiveEuclidianView()
									.getEuclidianController()
									.memorizeJustCreatedGeos(geos);
						}
						setVisibleForTools(!ok);
					}
				});

	}

	/**
	 * 
	 * @param num
	 * @return the circle
	 */
	abstract protected GeoElement createOutput(GeoNumberValue num);

	@Override
	public void windowGainedFocus(WindowEvent arg0) {
		if (!wrappedDialog.isModal()) {
			app.setCurrentSelectionListener(null);
		}
		((GuiManagerD) app.getGuiManager()).setCurrentTextfield(this, true);
	}

	@Override
	public void handleDialogVisibilityChange(boolean isVisible) {
		// nothing to do
	}
}