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1 | package be.nikiroo.jvcard.tui.panes; |
2 | ||
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3 | import java.util.LinkedList; |
4 | import java.util.List; | |
5 | ||
fae07ea7 | 6 | import be.nikiroo.jvcard.tui.UiColors; |
9c8baf0c | 7 | import be.nikiroo.jvcard.tui.UiColors.Element; |
fae07ea7 | 8 | |
9c8baf0c | 9 | import com.googlecode.lanterna.TextColor; |
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10 | import com.googlecode.lanterna.gui2.ActionListBox; |
11 | import com.googlecode.lanterna.gui2.Direction; | |
12 | import com.googlecode.lanterna.gui2.LinearLayout; | |
13 | import com.googlecode.lanterna.gui2.TextGUIGraphics; | |
14 | import com.googlecode.lanterna.gui2.AbstractListBox.ListItemRenderer; | |
15 | ||
16 | abstract public class MainContentList extends MainContent implements Runnable { | |
17 | private ActionListBox lines; | |
18 | ||
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19 | /** |
20 | * This class represent a part of a text line to draw in this | |
21 | * {@link MainContentList}. | |
22 | * | |
23 | * @author niki | |
24 | * | |
25 | */ | |
0b0b2b0f | 26 | public class TextPart { |
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27 | private String text; |
28 | private Element element; | |
29 | ||
30 | public TextPart(String text, Element element) { | |
31 | this.text = text; | |
32 | this.element = element; | |
33 | } | |
34 | ||
35 | public String getText() { | |
36 | return text; | |
37 | } | |
38 | ||
39 | public Element getElement() { | |
40 | return element; | |
41 | } | |
42 | ||
43 | public TextColor getForegroundColor() { | |
44 | if (element != null) | |
45 | return element.getForegroundColor(); | |
46 | return Element.DEFAULT.getForegroundColor(); | |
47 | } | |
48 | ||
49 | public TextColor getBackgroundColor() { | |
50 | if (element != null) | |
51 | return element.getBackgroundColor(); | |
52 | return Element.DEFAULT.getBackgroundColor(); | |
53 | } | |
54 | } | |
55 | ||
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56 | public MainContentList(final UiColors.Element normalStyle, |
57 | final UiColors.Element selectedStyle) { | |
58 | super(Direction.VERTICAL); | |
59 | ||
60 | lines = new ActionListBox(); | |
61 | ||
62 | lines | |
63 | .setListItemRenderer(new ListItemRenderer<Runnable, ActionListBox>() { | |
64 | /** | |
65 | * This is the main drawing method for a single list box | |
66 | * item, it applies the current theme to setup the colors | |
67 | * and then calls {@code getLabel(..)} and draws the result | |
68 | * using the supplied {@code TextGUIGraphics}. The graphics | |
69 | * object is created just for this item and is restricted so | |
70 | * that it can only draw on the area this item is occupying. | |
71 | * The top-left corner (0x0) should be the starting point | |
72 | * when drawing the item. | |
73 | * | |
74 | * @param graphics | |
75 | * Graphics object to draw with | |
76 | * @param listBox | |
77 | * List box we are drawing an item from | |
78 | * @param index | |
79 | * Index of the item we are drawing | |
80 | * @param item | |
81 | * The item we are drawing | |
82 | * @param selected | |
83 | * Will be set to {@code true} if the item is | |
84 | * currently selected, otherwise {@code false}, | |
85 | * but please notice what context 'selected' | |
86 | * refers to here (see {@code setSelectedIndex}) | |
87 | * @param focused | |
88 | * Will be set to {@code true} if the list box | |
89 | * currently has input focus, otherwise {@code | |
90 | * false} | |
91 | */ | |
92 | public void drawItem(TextGUIGraphics graphics, | |
93 | ActionListBox listBox, int index, Runnable item, | |
94 | boolean selected, boolean focused) { | |
95 | ||
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96 | // width "-1" to reserve space for the optional vertical |
97 | // scroll bar | |
9c8baf0c | 98 | List<TextPart> parts = MainContentList.this.getLabel( |
0b0b2b0f | 99 | index, lines.getSize().getColumns() - 1, |
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100 | selected, focused); |
101 | ||
102 | int position = 0; | |
103 | for (TextPart part : parts) { | |
104 | graphics.setForegroundColor(part | |
fae07ea7 | 105 | .getForegroundColor()); |
9c8baf0c | 106 | graphics.setBackgroundColor(part |
fae07ea7 | 107 | .getBackgroundColor()); |
9c8baf0c | 108 | String label = part.getText(); |
0b0b2b0f | 109 | |
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110 | graphics.putString(position, 0, label); |
111 | position += label.length(); | |
fae07ea7 | 112 | } |
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113 | } |
114 | }); | |
115 | ||
116 | addComponent(lines, LinearLayout | |
117 | .createLayoutData(LinearLayout.Alignment.Fill)); | |
118 | } | |
119 | ||
120 | /** | |
121 | * Add an item to this {@link MainContentList}. | |
122 | * | |
123 | * @param line | |
124 | * the item to add | |
125 | */ | |
126 | public void addItem(String line) { | |
127 | lines.addItem(line, this); | |
128 | } | |
9c8baf0c | 129 | |
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130 | /** |
131 | * Clear all the items in this {@link MainContentList} | |
132 | */ | |
133 | public void clearItems() { | |
134 | lines.clearItems(); | |
135 | } | |
136 | ||
137 | /** | |
138 | * Get the index of the currently selected line. | |
139 | * | |
140 | * @return the index | |
141 | */ | |
142 | public int getSelectedIndex() { | |
143 | return lines.getSelectedIndex(); | |
144 | } | |
145 | ||
146 | /** | |
147 | * Change the index of the currently selected line. | |
148 | * | |
149 | * @param index | |
150 | * the new index | |
151 | */ | |
152 | public void setSelectedIndex(int index) { | |
153 | lines.setSelectedIndex(index); | |
154 | } | |
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155 | |
156 | ||
157 | /** | |
158 | * Return the default content separator for text fields. | |
159 | * | |
160 | * @return the separator | |
161 | */ | |
162 | public String getSeparator() { | |
163 | // we could use: " ", "┃", "│"... | |
164 | return "┃"; | |
165 | } | |
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166 | |
167 | @Override | |
168 | public void run() { | |
169 | // item selected. | |
170 | // ignore. | |
171 | } | |
172 | ||
173 | @Override | |
174 | public String move(int x, int y) { | |
175 | setSelectedIndex(getSelectedIndex() + x); | |
176 | // TODO: y? | |
177 | return null; | |
178 | } | |
179 | ||
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180 | @Override |
181 | public int getCount() { | |
182 | return lines.getItemCount(); | |
183 | } | |
184 | ||
fae07ea7 | 185 | /** |
9c8baf0c | 186 | * Return the representation of the selected line, in {@link TextPart}s. |
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187 | * |
188 | * @param index | |
189 | * the line index | |
190 | * @param width | |
191 | * the max width of the line | |
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192 | * @param selected |
193 | * TRUE if the item is selected | |
194 | * @param focused | |
195 | * TRUE if the item is focused | |
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196 | * |
197 | * @return the text representation | |
198 | */ | |
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199 | protected List<TextPart> getLabel(int index, int width, boolean selected, |
200 | boolean focused) { | |
201 | List<TextPart> parts = new LinkedList<TextPart>(); | |
202 | ||
203 | if (selected && focused) { | |
204 | parts.add(new TextPart("" + lines.getItems().get(index), | |
205 | Element.CONTACT_LINE_SELECTED)); | |
206 | } else { | |
207 | parts.add(new TextPart("" + lines.getItems().get(index), | |
208 | Element.CONTACT_LINE)); | |
209 | } | |
210 | ||
211 | return parts; | |
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212 | } |
213 | } |