com.dawg6.web.dhcalc.client.PassivesPanel.java Source code

Introduction

Here is the source code for com.dawg6.web.dhcalc.client.PassivesPanel.java

Source

/*******************************************************************************
 * Copyright (c) 2014, 2015 Scott Clarke (scott@dawg6.com).
 *
 * This file is part of Dawg6's Demon Hunter DPS Calculator.
 *
 * Dawg6's Demon Hunter DPS Calculator is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Dawg6's Demon Hunter DPS Calculator is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package com.dawg6.web.dhcalc.client;

import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import java.util.Vector;

import com.dawg6.web.dhcalc.shared.calculator.Passive;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.CaptionPanel;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.ListBox;

public class PassivesPanel extends Composite {

    private final List<ChangeHandler> handlers = new Vector<ChangeHandler>();
    private final List<ListBox> listBoxes = new Vector<ListBox>();
    private final List<Anchor> anchors = new Vector<Anchor>();

    private boolean disableListeners = false;

    public static final int NUM_PASSIVES = 5;

    public PassivesPanel() {

        CaptionPanel captionPanel = new CaptionPanel("Passives");
        initWidget(captionPanel);

        FlexTable flexTable = new FlexTable();
        flexTable.setCellPadding(2);
        captionPanel.setContentWidget(flexTable);

        List<Passive> list = new Vector<Passive>();
        for (Passive p : Passive.values())
            list.add(p);
        Collections.sort(list, new Comparator<Passive>() {

            @Override
            public int compare(Passive a, Passive b) {
                return a.getLongName().compareTo(b.getLongName());
            }
        });

        for (int i = 0; i < NUM_PASSIVES; i++) {
            final ListBox lb = new ListBox();
            lb.setWidth("100%");
            flexTable.setWidget(i, 1, lb);

            final Anchor anchor = new Anchor("passive " + (i + 1));
            anchor.setWordWrap(false);
            anchor.setTarget("_blank");
            anchor.setHref("javascript:void(0)");
            flexTable.setWidget(i, 0, anchor);

            lb.addItem("None", "");

            for (Passive p : list) {
                lb.addItem(p.getLongName(), p.name());
            }

            lb.setSelectedIndex(0);

            lb.addChangeHandler(new ChangeHandler() {

                @Override
                public void onChange(ChangeEvent event) {
                    setTooltip(lb, anchor);
                    checkDuplicate(lb);
                    passivesChanged(event);
                }
            });

            listBoxes.add(lb);
            anchors.add(anchor);
        }
    }

    protected void checkDuplicate(ListBox lb) {
        int selected = lb.getSelectedIndex();

        boolean prev = disableListeners;
        disableListeners = true;

        for (int i = 0; i < NUM_PASSIVES; i++) {
            ListBox l = listBoxes.get(i);

            if ((l != lb) && (l.getSelectedIndex() == selected)) {
                l.setSelectedIndex(0);
                setTooltip(anchors.get(i), null);
            }
        }

        disableListeners = prev;
    }

    protected void setTooltip(ListBox lb, Anchor anchor) {
        Passive p = getPassive(lb);
        setTooltip(anchor, p);
    }

    private void setTooltip(Anchor anchor, Passive p) {
        anchor.setHref((p == null) ? "javascript:void(0)" : p.getUrl());
    }

    protected void passivesChanged(ChangeEvent event) {

        if (!disableListeners) {
            for (ChangeHandler h : handlers)
                h.onChange(event);
        }

    }

    public void addChangeHandler(ChangeHandler handler) {
        this.handlers.add(handler);
    }

    public void setPassives(Set<Passive> list) {
        disableListeners = true;

        boolean changed = false;

        int n = 0;

        if (list != null) {
            for (Passive p : list) {

                if (n < NUM_PASSIVES) {
                    Anchor a = anchors.get(n);
                    ListBox lb = listBoxes.get(n++);

                    int before = lb.getSelectedIndex();

                    setPassive(lb, p);
                    setTooltip(a, p);

                    changed |= (lb.getSelectedIndex() != before);
                }
            }
        }

        while (n < NUM_PASSIVES) {
            Anchor a = anchors.get(n);
            ListBox lb = listBoxes.get(n++);

            int before = lb.getSelectedIndex();

            setPassive(lb, (Passive) null);
            setTooltip(a, null);

            changed |= (0 != before);
        }

        disableListeners = false;

        if (changed)
            passivesChanged(null);
    }

    public Set<Passive> getPassives() {
        Set<Passive> set = new TreeSet<Passive>();

        for (ListBox lb : listBoxes) {
            Passive p = getPassive(lb);

            if (p != null)
                set.add(p);
        }

        return set;
    }

    private Passive getPassive(ListBox lb) {
        int i = lb.getSelectedIndex();
        String value = lb.getValue(i);

        return (value.length() == 0) ? null : Passive.valueOf(value);
    }

    private void setPassive(ListBox lb, Passive p) {
        setPassive(lb, (p == null) ? null : p.name());
    }

    private void setPassive(ListBox lb, String name) {
        int n = lb.getItemCount();

        if ((name != null) && (name.length() > 0)) {
            for (int i = 0; i < n; i++) {
                String value = lb.getValue(i);

                if (value.equals(name)) {
                    lb.setSelectedIndex(i);
                    return;
                }

            }
        }

        lb.setSelectedIndex(0);
    }
}