| 1 | package be.nikiroo.jvcard.tui.panes; |
| 2 | |
| 3 | import java.util.LinkedList; |
| 4 | import java.util.List; |
| 5 | |
| 6 | import be.nikiroo.jvcard.i18n.Trans.StringId; |
| 7 | import be.nikiroo.jvcard.tui.Main; |
| 8 | import be.nikiroo.jvcard.tui.StringUtils; |
| 9 | import be.nikiroo.jvcard.tui.UiColors; |
| 10 | import be.nikiroo.jvcard.tui.UiColors.Element; |
| 11 | |
| 12 | import com.googlecode.lanterna.TextColor; |
| 13 | import com.googlecode.lanterna.gui2.AbstractListBox.ListItemRenderer; |
| 14 | import com.googlecode.lanterna.gui2.ActionListBox; |
| 15 | import com.googlecode.lanterna.gui2.Direction; |
| 16 | import com.googlecode.lanterna.gui2.LinearLayout; |
| 17 | import com.googlecode.lanterna.gui2.TextGUIGraphics; |
| 18 | |
| 19 | abstract public class MainContentList extends MainContent implements Runnable { |
| 20 | private ActionListBox lines; |
| 21 | |
| 22 | /** |
| 23 | * This class represent a part of a text line to draw in this |
| 24 | * {@link MainContentList}. |
| 25 | * |
| 26 | * @author niki |
| 27 | * |
| 28 | */ |
| 29 | public class TextPart { |
| 30 | private String text; |
| 31 | private Element element; |
| 32 | |
| 33 | public TextPart(String text, Element element) { |
| 34 | this.text = text; |
| 35 | this.element = element; |
| 36 | } |
| 37 | |
| 38 | public String getText() { |
| 39 | return text; |
| 40 | } |
| 41 | |
| 42 | public Element getElement() { |
| 43 | return element; |
| 44 | } |
| 45 | |
| 46 | public TextColor getForegroundColor() { |
| 47 | if (element != null) |
| 48 | return element.getForegroundColor(); |
| 49 | return Element.DEFAULT.getForegroundColor(); |
| 50 | } |
| 51 | |
| 52 | public TextColor getBackgroundColor() { |
| 53 | if (element != null) |
| 54 | return element.getBackgroundColor(); |
| 55 | return Element.DEFAULT.getBackgroundColor(); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | public MainContentList() { |
| 60 | super(Direction.VERTICAL); |
| 61 | |
| 62 | lines = new ActionListBox(); |
| 63 | |
| 64 | lines.setListItemRenderer(new ListItemRenderer<Runnable, ActionListBox>() { |
| 65 | /** |
| 66 | * This is the main drawing method for a single list box item, it |
| 67 | * applies the current theme to setup the colors and then calls |
| 68 | * {@code getLabel(..)} and draws the result using the supplied |
| 69 | * {@code TextGUIGraphics}. The graphics object is created just for |
| 70 | * this item and is restricted so that it can only draw on the area |
| 71 | * this item is occupying. The top-left corner (0x0) should be the |
| 72 | * starting point 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 currently |
| 84 | * selected, otherwise {@code false}, but please notice |
| 85 | * what context 'selected' refers to here (see |
| 86 | * {@code setSelectedIndex}) |
| 87 | * @param focused |
| 88 | * Will be set to {@code true} if the list box currently |
| 89 | * has input focus, otherwise {@code false} |
| 90 | */ |
| 91 | public void drawItem(TextGUIGraphics graphics, |
| 92 | ActionListBox listBox, int index, Runnable item, |
| 93 | boolean selected, boolean focused) { |
| 94 | |
| 95 | // width "-1" to reserve space for the optional vertical |
| 96 | // scroll bar |
| 97 | List<TextPart> parts = MainContentList.this.getLabel(index, |
| 98 | lines.getSize().getColumns() - 1, selected, focused); |
| 99 | |
| 100 | int position = 0; |
| 101 | for (TextPart part : parts) { |
| 102 | graphics.setForegroundColor(part.getForegroundColor()); |
| 103 | graphics.setBackgroundColor(part.getBackgroundColor()); |
| 104 | |
| 105 | String label = StringUtils.sanitize(part.getText(), |
| 106 | UiColors.getInstance().isUnicode()); |
| 107 | |
| 108 | graphics.putString(position, 0, label); |
| 109 | position += label.length(); |
| 110 | } |
| 111 | } |
| 112 | }); |
| 113 | |
| 114 | addComponent(lines, |
| 115 | LinearLayout.createLayoutData(LinearLayout.Alignment.Fill)); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Add an item to this {@link MainContentList}. |
| 120 | * |
| 121 | * @param line |
| 122 | * the item to add |
| 123 | */ |
| 124 | public void addItem(String line) { |
| 125 | lines.addItem(line, this); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Delete the given item. |
| 130 | * |
| 131 | * Remark: it will only delete the first found instance if multiple |
| 132 | * instances of this item are present. |
| 133 | * |
| 134 | * @param line |
| 135 | * the line to delete |
| 136 | * |
| 137 | * @return TRUE if the item was deleted |
| 138 | */ |
| 139 | public boolean removeItem(String line) { |
| 140 | boolean deleted = false; |
| 141 | |
| 142 | List<Runnable> copy = lines.getItems(); |
| 143 | for (int index = 0; index < copy.size(); index++) { |
| 144 | if (copy.get(index).toString().equals(line)) { |
| 145 | deleted = true; |
| 146 | copy.remove(index); |
| 147 | break; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | int index = getSelectedIndex(); |
| 152 | clearItems(); |
| 153 | for (Runnable run : copy) { |
| 154 | addItem(run.toString()); |
| 155 | } |
| 156 | setSelectedIndex(index); |
| 157 | |
| 158 | return deleted; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * Clear all the items in this {@link MainContentList} |
| 163 | */ |
| 164 | public void clearItems() { |
| 165 | lines.clearItems(); |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Get the index of the currently selected line. |
| 170 | * |
| 171 | * @return the index |
| 172 | */ |
| 173 | public int getSelectedIndex() { |
| 174 | return lines.getSelectedIndex(); |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Change the index of the currently selected line. |
| 179 | * |
| 180 | * @param index |
| 181 | * the new index |
| 182 | */ |
| 183 | public void setSelectedIndex(int index) { |
| 184 | lines.setSelectedIndex(index); |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Return the default content separator for text fields. |
| 189 | * |
| 190 | * @return the separator |
| 191 | */ |
| 192 | public String getSeparator() { |
| 193 | return Main.trans(StringId.DEAULT_FIELD_SEPARATOR); |
| 194 | } |
| 195 | |
| 196 | @Override |
| 197 | public void run() { |
| 198 | // item selected. |
| 199 | // ignore. |
| 200 | } |
| 201 | |
| 202 | @Override |
| 203 | public String move(int x, int y) { |
| 204 | setSelectedIndex(getSelectedIndex() + x); |
| 205 | // TODO: y? |
| 206 | return null; |
| 207 | } |
| 208 | |
| 209 | @Override |
| 210 | public int getCount() { |
| 211 | return lines.getItemCount(); |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | * Return the representation of the selected line, in {@link TextPart}s. |
| 216 | * |
| 217 | * @param index |
| 218 | * the line index |
| 219 | * @param width |
| 220 | * the max width of the line |
| 221 | * @param selected |
| 222 | * TRUE if the item is selected |
| 223 | * @param focused |
| 224 | * TRUE if the item is focused |
| 225 | * |
| 226 | * @return the text representation |
| 227 | */ |
| 228 | protected List<TextPart> getLabel(int index, int width, boolean selected, |
| 229 | boolean focused) { |
| 230 | List<TextPart> parts = new LinkedList<TextPart>(); |
| 231 | |
| 232 | if (selected && focused) { |
| 233 | parts.add(new TextPart("" + lines.getItems().get(index), |
| 234 | Element.CONTACT_LINE_SELECTED)); |
| 235 | } else { |
| 236 | parts.add(new TextPart("" + lines.getItems().get(index), |
| 237 | Element.CONTACT_LINE)); |
| 238 | } |
| 239 | |
| 240 | return parts; |
| 241 | } |
| 242 | } |