plugins/org.eclipse.skills/src/org/eclipse/skills/ui/views/character/SkillsComposite.java

/*******************************************************************************
 * Copyright (c) 2020 Christian Pontesegger and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     Christian Pontesegger - initial API and implementation
 *******************************************************************************/

package org.eclipse.skills.ui.views.character;

import java.time.Duration;
import java.util.Collection;
import java.util.List;

import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.util.Throttler;
import org.eclipse.skills.model.ISkill;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.ProgressBar;

public class SkillsComposite extends Composite {

	private static final String FLAG_WITH_PROGRESSBAR = "hasProgressbar";

	private final boolean fShowProgress;

	private final Throttler fUiUpdateThrottler = new Throttler(Display.getDefault(), Duration.ofMillis(500), this::updateControls);

	private final Adapter fSkillAdapter = new SkillAdapter();

	public SkillsComposite(Composite parent, int style, List<ISkill> skills, boolean showProgress) {
		super(parent, style);

		fShowProgress = showProgress;

		setLayout(new GridLayout(showProgress ? 3 : 2, false));

		setSkills(skills);
	}

	public void setSkills(Collection<ISkill> skills) {

		for (final ISkill skill : skills) {
			createSkillElement(this, skill);
			skill.eAdapters().add(fSkillAdapter);
		}

		// trigger fresh layout
		getParent().layout();
	}

	private void createSkillElement(Composite parent, ISkill skill) {
		final Label lblTitle = new Label(parent, SWT.NONE);
		lblTitle.setText(skill.getName());
		lblTitle.setToolTipText(skill.getDescription().getText());
		lblTitle.setLayoutData(GridDataFactory.fillDefaults().create());

		if (fShowProgress) {
			final ProgressBar progressBar = new ProgressBar(parent, SWT.NONE);
			progressBar.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
			progressBar.setData(skill);
			updateControl(progressBar, skill);

			final Label lblLevel = new Label(parent, SWT.NONE);
			lblLevel.setData(skill);
			lblLevel.setData(FLAG_WITH_PROGRESSBAR, true);
			updateControl(lblLevel, skill);

		} else {

			final Label lblLevel = new Label(parent, SWT.NONE);
			lblLevel.setData(skill);
			lblLevel.setData(FLAG_WITH_PROGRESSBAR, false);
			lblLevel.setLayoutData(GridDataFactory.fillDefaults().indent(20, 0).create());
			updateControl(lblLevel, skill);
		}
	}

	public void updateControls() {
		for (final Control control : getChildren()) {
			if (control.getData() instanceof ISkill)
				updateControl(control, (ISkill) control.getData());
		}
	}

	public void updateControl(Control control, ISkill skill) {
		final int level = skill.getProgression().getLevel(skill.getExperience());
		final int currentLevelMinXP = skill.getProgression().getMinimumXpForLevel(level);
		final int nextLevelMinXP = skill.getProgression().getMinimumXpForLevel(level + 1);

		if (control instanceof Label) {
			if (hasProgressbar(control)) {
				((Label) control).setText(String.format("Level %d", level));
				((Label) control).setToolTipText(
						String.format("Earn %d more %s to reach level %d", (nextLevelMinXP - skill.getExperience()), skill.getName(), level + 1));

			} else {
				((Label) control).setText(String.format("%d", level));
				((Label) control).setToolTipText(
						String.format("Earn %d more %s points to reach level %d", (nextLevelMinXP - skill.getExperience()), skill.getName(), level + 1));
			}

		} else if (control instanceof ProgressBar) {
			((ProgressBar) control).setMinimum(currentLevelMinXP);
			((ProgressBar) control).setMaximum(nextLevelMinXP);
			((ProgressBar) control).setSelection(skill.getExperience());
			((ProgressBar) control).setToolTipText(String.format("%d %s XP", skill.getExperience(), skill.getName()));
		}
	}

	private boolean hasProgressbar(Control control) {
		final Object hasProgressbar = control.getData(FLAG_WITH_PROGRESSBAR);
		return (hasProgressbar instanceof Boolean) ? (Boolean) hasProgressbar : true;
	}

	private class SkillAdapter extends AdapterImpl {
		@Override
		public void notifyChanged(Notification msg) {

			if (msg.getNotifier() instanceof ISkill)
				fUiUpdateThrottler.throttledExec();
		}
	}
}