RangeSliderModel.java revision 1472:c18cbe5936b8 
1/*
2 * Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25package com.sun.hotspot.igv.util;
26
27import com.sun.hotspot.igv.data.ChangedEventProvider;
28import com.sun.hotspot.igv.data.ChangedEvent;
29import java.awt.Color;
30import java.util.ArrayList;
31import java.util.Collections;
32import java.util.List;
33
34/**
35 *
36 * @author Thomas Wuerthinger
37 */
38public class RangeSliderModel implements ChangedEventProvider<RangeSliderModel> {
39
40    // Warning: Update setData method if fields are added
41    private ChangedEvent<RangeSliderModel> changedEvent;
42    private ChangedEvent<RangeSliderModel> colorChangedEvent;
43    private List<String> positions;
44    private int firstPosition;
45    private int secondPosition;
46    private List<Color> colors;
47
48    public void setData(RangeSliderModel model) {
49        boolean changed = false;
50        changed |= (positions != model.positions);
51        positions = model.positions;
52        changed |= (firstPosition != model.firstPosition);
53        firstPosition = model.firstPosition;
54        changed |= (secondPosition != model.secondPosition);
55        secondPosition = model.secondPosition;
56        boolean colorChanged = (colors != model.colors);
57        colors = model.colors;
58        if (changed) {
59            changedEvent.fire();
60        }
61        if (colorChanged) {
62            colorChangedEvent.fire();
63        }
64    }
65
66    public RangeSliderModel(List<String> positions) {
67        assert positions.size() > 0;
68        this.changedEvent = new ChangedEvent<RangeSliderModel>(this);
69        this.colorChangedEvent = new ChangedEvent<RangeSliderModel>(this);
70        setPositions(positions);
71    }
72
73    protected void setPositions(List<String> positions) {
74        this.positions = positions;
75        colors = new ArrayList<Color>();
76        for (int i = 0; i < positions.size(); i++) {
77            colors.add(Color.black);
78        }
79        changedEvent.fire();
80        colorChangedEvent.fire();
81    }
82
83    public void setColors(List<Color> colors) {
84        this.colors = colors;
85        colorChangedEvent.fire();
86    }
87
88    public List<Color> getColors() {
89        return colors;
90    }
91
92    public RangeSliderModel copy() {
93        RangeSliderModel newModel = new RangeSliderModel(positions);
94        newModel.firstPosition = firstPosition;
95        newModel.secondPosition = secondPosition;
96        newModel.colors = colors;
97        return newModel;
98    }
99
100    public List<String> getPositions() {
101        return Collections.unmodifiableList(positions);
102    }
103
104    public int getFirstPosition() {
105        return firstPosition;
106    }
107
108    public int getSecondPosition() {
109        return secondPosition;
110    }
111
112    public void setPositions(int fp, int sp) {
113        assert fp >= 0 && fp < positions.size();
114        assert sp >= 0 && sp < positions.size();
115        firstPosition = fp;
116        secondPosition = sp;
117        ensureOrder();
118        changedEvent.fire();
119    }
120
121    private void ensureOrder() {
122        if (secondPosition < firstPosition) {
123            int tmp = secondPosition;
124            secondPosition = firstPosition;
125            firstPosition = tmp;
126        }
127    }
128
129    public ChangedEvent<RangeSliderModel> getColorChangedEvent() {
130        return colorChangedEvent;
131    }
132
133    public ChangedEvent<RangeSliderModel> getChangedEvent() {
134        return changedEvent;
135    }
136}
137