1 | package org.openstreetmap.josm.gui;
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2 |
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3 | import java.awt.Component;
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4 | import java.awt.Dimension;
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5 | import java.awt.event.ActionEvent;
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6 | import java.awt.GridBagLayout;
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7 | import java.awt.Toolkit;
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8 | import java.util.ArrayList;
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9 |
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10 | import javax.swing.AbstractAction;
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11 | import javax.swing.Action;
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12 | import javax.swing.JButton;
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13 | import javax.swing.JComponent;
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14 | import javax.swing.JDialog;
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15 | import javax.swing.JOptionPane;
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16 | import javax.swing.JPanel;
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17 | import javax.swing.JScrollBar;
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18 | import javax.swing.JScrollPane;
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19 | import javax.swing.KeyStroke;
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20 |
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21 | import org.openstreetmap.josm.gui.JMultilineLabel;
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22 | import org.openstreetmap.josm.tools.GBC;
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23 | import org.openstreetmap.josm.tools.ImageProvider;
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24 |
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25 |
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26 | public class ExtendedDialog extends JDialog {
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27 | private int result = 0;
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28 | private Component parent;
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29 | private final String[] bTexts;
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30 |
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31 | // For easy access when inherited
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32 | protected Object contentConstraints = GBC.eol().anchor(GBC.CENTER).fill(GBC.HORIZONTAL).insets(5,10,5,0);
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33 | protected ArrayList<JButton> buttons = new ArrayList<JButton>();
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34 |
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35 | /**
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36 | * Sets up the dialog. The first button is always the default.
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37 | * @param parent The parent element that will be used for position and maximum size
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38 | * @param title The text that will be shown in the window titlebar
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39 | * @param content Any component that should be show above the buttons (e.g. JLabel)
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40 | * @param buttonTexts The labels that will be displayed on the buttons
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41 | * @param buttonIcons The path to the icons that will be displayed on the buttons. Path is relative to JOSM's image directory. File extensions need to be included. If a button should not have an icon pass null.
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42 | */
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43 | public ExtendedDialog(Component parent, String title, Component content, String[] buttonTexts, String[] buttonIcons) {
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44 | super(JOptionPane.getFrameForComponent(parent), title, true);
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45 | this.parent = parent;
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46 | bTexts = buttonTexts;
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47 | setupDialog(content, buttonIcons);
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48 | setVisible(true);
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49 | }
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50 |
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51 | public ExtendedDialog(Component parent, String title, Component content, String[] buttonTexts) {
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52 | this(parent, title, content, buttonTexts, null);
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53 | }
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54 |
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55 | /**
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56 | * Sets up the dialog and displays the given message in a breakable label
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57 | */
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58 | public ExtendedDialog(Component parent, String title, String message, String[] buttonTexts, String[] buttonIcons) {
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59 | super(JOptionPane.getFrameForComponent(parent), title, true);
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60 |
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61 | JMultilineLabel lbl = new JMultilineLabel(message);
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62 | // Make it not wider than 2/3 of the screen
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63 | Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
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64 | lbl.setMaxWidth(Math.round(screenSize.width*2/3));
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65 |
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66 | bTexts = buttonTexts;
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67 | setupDialog(lbl, buttonIcons);
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68 | setVisible(true);
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69 | }
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70 |
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71 | public ExtendedDialog(Component parent, String title, String message, String[] buttonTexts) {
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72 | this(parent, title, message, buttonTexts, null);
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73 | }
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74 |
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75 | /**
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76 | * Constructor that doesn't make the dialog visible immediately. Intended for when inheriting.
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77 | */
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78 | public ExtendedDialog(Component parent, String title, String[] buttonTexts, boolean modal) {
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79 | super(JOptionPane.getFrameForComponent(parent), title, modal);
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80 | bTexts = buttonTexts;
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81 | }
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82 |
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83 | protected void setupDialog(Component content, String[] buttonIcons) {
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84 | setupEscListener();
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85 |
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86 | JButton button;
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87 | JPanel buttonsPanel = new JPanel(new GridBagLayout());
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88 |
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89 | for(int i=0; i < bTexts.length; i++) {
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90 | Action action = new AbstractAction(bTexts[i]) {
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91 | public void actionPerformed(ActionEvent evt) {
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92 | buttonAction(evt);
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93 | }
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94 | };
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95 |
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96 | button = new JButton(action);
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97 | if(buttonIcons != null && buttonIcons[i] != null)
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98 | button.setIcon(ImageProvider.get(buttonIcons[i]));
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99 |
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100 | if(i == 0) rootPane.setDefaultButton(button);
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101 | buttonsPanel.add(button, GBC.std().insets(2,2,2,2));
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102 | buttons.add(button);
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103 | }
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104 |
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105 | JPanel cp = new JPanel(new GridBagLayout());
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106 | cp.add(content, contentConstraints);
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107 | cp.add(buttonsPanel, GBC.eol().anchor(GBC.CENTER).insets(5,5,5,5));
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108 |
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109 | JScrollPane pane = new JScrollPane(cp);
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110 | pane.setBorder(null);
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111 | setContentPane(pane);
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112 |
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113 | pack();
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114 |
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115 | // Try to make it not larger than the parent window or at least not larger than 2/3 of the screen
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116 | Dimension d = getSize();
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117 | Dimension x = findMaxDialogSize();
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118 |
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119 | boolean limitedInWidth = d.width > x.width;
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120 | boolean limitedInHeight = d.height > x.height;
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121 |
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122 | if(x.width > 0 && d.width > x.width) d.width = x.width;
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123 | if(x.height > 0 && d.height > x.height) d.height = x.height;
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124 |
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125 | // We have a vertical scrollbar and enough space to prevent a horizontal one
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126 | if(!limitedInWidth && limitedInHeight)
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127 | d.width += new JScrollBar().getPreferredSize().width;
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128 |
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129 | setSize(d);
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130 | setLocationRelativeTo(parent);
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131 | }
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132 |
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133 | /**
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134 | * @return int The selected button. The count starts with 1.
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135 | * A return value of 0 means the dialog has been closed otherwise.
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136 | */
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137 | public int getValue() {
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138 | return result;
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139 | }
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140 |
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141 | /**
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142 | * This gets performed whenever a button is clicked or activated
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143 | * @param evt the button event
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144 | */
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145 | protected void buttonAction(ActionEvent evt) {
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146 | String a = evt.getActionCommand();
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147 | for(int i=0; i < bTexts.length; i++)
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148 | if(bTexts[i].equals(a)) {
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149 | result = i+1;
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150 | break;
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151 | }
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152 |
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153 | setVisible(false);
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154 | }
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155 |
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156 | /**
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157 | * Tries to find a good value of how large the dialog should be
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158 | * @return Dimension Size of the parent Component or 2/3 of screen size if not available
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159 | */
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160 | protected Dimension findMaxDialogSize() {
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161 | Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
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162 | Dimension x = new Dimension(Math.round(screenSize.width*2/3),
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163 | Math.round(screenSize.height*2/3));
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164 | try {
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165 | if(parent != null)
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166 | x = JOptionPane.getFrameForComponent(parent).getSize();
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167 | } catch(NullPointerException e) { }
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168 | return x;
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169 | }
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170 |
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171 | /**
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172 | * Makes the dialog listen to ESC keypressed
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173 | */
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174 | private void setupEscListener() {
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175 | Action actionListener = new AbstractAction() {
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176 | public void actionPerformed(ActionEvent actionEvent) {
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177 | // 0 means that the dialog has been closed otherwise.
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178 | // We need to set it to zero again, in case the dialog has been re-used
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179 | // and the result differs from its default value
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180 | result = 0;
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181 | setVisible(false);
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182 | }
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183 | };
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184 |
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185 | rootPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW)
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186 | .put(KeyStroke.getKeyStroke("ESCAPE"), "ESCAPE");
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187 | rootPane.getActionMap().put("ESCAPE", actionListener);
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188 | }
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189 | }
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