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14 package wingset;
15
16 import org.wings.*;
17
18 import javax.swing.tree.TreeNode  ;
19 import java.awt.*;
20 import java.awt.event.ActionEvent ;
21 import java.awt.event.ActionListener ;
22 import java.awt.event.ItemEvent ;
23 import java.awt.event.ItemListener ;
24 import java.util.ArrayList ;
25
26
30 public class PageScrollerExample
31 extends WingSetPane {
32
33 SList list;
34 SPageScroller scrollbar;
35 SScrollPane scrollPane;
36 private PageScrollerControls controls;
37
38 public SComponent createExample() {
39 list = new SList(listData);
40 list.setVisibleRowCount(8);
41 list.setShowAsFormComponent(false);
42
43 scrollbar = new SPageScroller(Adjustable.VERTICAL);
44 scrollbar.setName("scrollbar");
45
46 scrollbar.setLayoutMode(Adjustable.HORIZONTAL);
48 scrollbar.setDirectPages(10);
49
50 scrollPane = new SScrollPane(list);
51 scrollPane.setHorizontalScrollBar(null);
52 scrollPane.setVerticalScrollBar(null);
53 scrollPane.setVerticalExtent(50);
54
55 controls = new PageScrollerControls();
56 controls.addSizable(scrollPane);
57
58 SForm form = new SForm(new SBorderLayout());
59 form.add(controls, SBorderLayout.NORTH);
60 form.add(scrollPane, SBorderLayout.CENTER);
61 return form;
62 }
63
64 static void addChildNodes(TreeNode node, ArrayList list, int indent) {
65 if (node != null) {
66 StringBuffer name = new StringBuffer ();
67 for (int i = 0; i < indent; i++) {
68 name.append(".");
69 }
70 name.append(node.toString());
71 list.add(name.toString());
72 for (int i = 0; i < node.getChildCount(); i++) {
73 addChildNodes(node.getChildAt(i), list, indent + 1);
74 }
75 }
76 }
77
78 static Object [] listData = createData();
79
80 static Object [] createData() {
81 TreeNode root = HugeTreeModel.generateTree();
82
83 ArrayList data = new ArrayList ();
84 addChildNodes(root, data, 0);
85
86 return data.toArray();
87 }
88
89
90 class PageScrollerControls extends ComponentControls {
91 public PageScrollerControls() {
92 add(new SLabel("Visible Rows: "));
93 Object [] visRowsValues = {new Integer (4), new Integer (8), new Integer (12),
94 new Integer (16), new Integer (20), new Integer (50)};
95 final SComboBox visRows = new SComboBox(visRowsValues);
96 visRows.addItemListener(new ItemListener () {
97 public void itemStateChanged(ItemEvent e) {
98 list.setVisibleRowCount(((Integer ) visRows.getSelectedItem()).intValue());
99 }
100 });
101 visRows.setSelectedItem(new Integer (list.getVisibleRowCount()));
102 add(visRows);
103
104 add(new SLabel("Direct Pages: "));
105 Object [] values = {new Integer (5), new Integer (10), new Integer (15),
106 new Integer (20), new Integer (50)};
107 final SComboBox comboBox = new SComboBox(values);
108 comboBox.addItemListener(new ItemListener () {
109 public void itemStateChanged(ItemEvent e) {
110 scrollbar.setDirectPages(((Integer ) comboBox.getSelectedItem()).intValue());
111 }
112 });
113 comboBox.setSelectedItem(new Integer (scrollbar.getDirectPages()));
114 add(comboBox);
115
116
117 add(new SLabel("Layout: "));
118 Object [] constraints = {"Top", "Left", "Bottom", "Right"};
119 final SComboBox layout = new SComboBox(constraints);
120 layout.addItemListener(new ItemListener () {
121 public void itemStateChanged(ItemEvent e) {
122 if ("Top".equals(layout.getSelectedItem())) {
123 scrollbar.setLayoutMode(Adjustable.HORIZONTAL);
124 scrollPane.setHorizontalScrollBar(scrollbar,
125 SScrollPaneLayout.NORTH);
126 } else if ("Bottom".equals(layout.getSelectedItem())) {
127 scrollbar.setLayoutMode(Adjustable.HORIZONTAL);
128 scrollPane.setHorizontalScrollBar(scrollbar,
129 SScrollPaneLayout.SOUTH);
130 } else if ("Left".equals(layout.getSelectedItem())) {
131 scrollbar.setLayoutMode(Adjustable.VERTICAL);
132 scrollPane.setHorizontalScrollBar(scrollbar,
133 SScrollPaneLayout.WEST);
134 } else if ("Right".equals(layout.getSelectedItem())) {
135 scrollbar.setLayoutMode(Adjustable.VERTICAL);
136 scrollPane.setHorizontalScrollBar(scrollbar,
137 SScrollPaneLayout.EAST);
138 }
139 }
140 });
141 layout.setSelectedItem("Bottom");
142 add(layout);
143
144
145 final SCheckBox margin = new SCheckBox("Margin");
146 margin.addActionListener(new ActionListener () {
147 public void actionPerformed(ActionEvent e) {
148 scrollbar.setMarginVisible(margin.isSelected());
149 }
150 });
151 margin.setSelected(scrollbar.isMarginVisible());
152 add(margin);
153
154 final SCheckBox step = new SCheckBox("Step");
155 step.addActionListener(new ActionListener () {
156 public void actionPerformed(ActionEvent e) {
157 scrollbar.setStepVisible(step.isSelected());
158 }
159 });
160 step.setSelected(scrollbar.isStepVisible());
161 add(step);
162
163 final SCheckBox paging = new SCheckBox("Paged Scrolling");
164 paging.addActionListener(new ActionListener () {
165 public void actionPerformed(ActionEvent e) {
166 boolean selected = paging.isSelected();
167 ((SScrollPaneLayout)scrollPane.getLayout()).setPaging(selected);
168 }
169 });
170 paging.setSelected(true);
171 add(paging);
172 }
173 }
174 }
175 |
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