*
* The MIT License (MIT)
*
- * Copyright (C) 2016 Kevin Lamonte
+ * Copyright (C) 2019 Kevin Lamonte
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
package jexer;
import jexer.bits.CellAttributes;
+import jexer.bits.MnemonicString;
+import jexer.bits.StringUtils;
/**
- * TLabel implements a simple label.
+ * TLabel implements a simple label, with an optional mnemonic hotkey action
+ * associated with it.
*/
-public final class TLabel extends TWidget {
+public class TLabel extends TWidget {
- /**
- * Label text.
- */
- private String label = "";
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
- * Get label text.
- *
- * @return label text
+ * The shortcut and label.
*/
- public String getLabel() {
- return label;
- }
+ private MnemonicString mnemonic;
/**
- * Set label text.
- *
- * @param label new label text
+ * The action to perform when the mnemonic shortcut is pressed.
*/
- public void setLabel(final String label) {
- this.label = label;
- }
+ private TAction action;
/**
* Label color.
*/
private String colorKey;
+ /**
+ * If true, use the window's background color.
+ */
+ private boolean useWindowBackground = true;
+
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Public constructor, using the default "tlabel" for colorKey.
*
this(parent, text, x, y, "tlabel");
}
+ /**
+ * Public constructor, using the default "tlabel" for colorKey.
+ *
+ * @param parent parent widget
+ * @param text label on the screen
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param action to call when shortcut is pressed
+ */
+ public TLabel(final TWidget parent, final String text, final int x,
+ final int y, final TAction action) {
+
+ this(parent, text, x, y, "tlabel", action);
+ }
+
/**
* Public constructor.
*
public TLabel(final TWidget parent, final String text, final int x,
final int y, final String colorKey) {
+ this(parent, text, x, y, colorKey, true);
+ }
+
+ /**
+ * Public constructor.
+ *
+ * @param parent parent widget
+ * @param text label on the screen
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param colorKey ColorTheme key color to use for foreground text
+ * @param action to call when shortcut is pressed
+ */
+ public TLabel(final TWidget parent, final String text, final int x,
+ final int y, final String colorKey, final TAction action) {
+
+ this(parent, text, x, y, colorKey, true, action);
+ }
+
+ /**
+ * Public constructor.
+ *
+ * @param parent parent widget
+ * @param text label on the screen
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param colorKey ColorTheme key color to use for foreground text
+ * @param useWindowBackground if true, use the window's background color
+ */
+ public TLabel(final TWidget parent, final String text, final int x,
+ final int y, final String colorKey, final boolean useWindowBackground) {
+
+ this(parent, text, x, y, colorKey, useWindowBackground, null);
+ }
+
+ /**
+ * Public constructor.
+ *
+ * @param parent parent widget
+ * @param text label on the screen
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param colorKey ColorTheme key color to use for foreground text
+ * @param useWindowBackground if true, use the window's background color
+ * @param action to call when shortcut is pressed
+ */
+ public TLabel(final TWidget parent, final String text, final int x,
+ final int y, final String colorKey, final boolean useWindowBackground,
+ final TAction action) {
+
// Set parent and window
- super(parent, false, x, y, text.length(), 1);
+ super(parent, false, x, y, 0, 1);
- this.label = text;
+ setLabel(text);
this.colorKey = colorKey;
+ this.useWindowBackground = useWindowBackground;
+ this.action = action;
+ }
+
+ // ------------------------------------------------------------------------
+ // TWidget ----------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Override TWidget's width: we can only set width at construction time.
+ *
+ * @param width new widget width (ignored)
+ */
+ @Override
+ public void setWidth(final int width) {
+ // Do nothing
+ }
+
+ /**
+ * Override TWidget's height: we can only set height at construction
+ * time.
+ *
+ * @param height new widget height (ignored)
+ */
+ @Override
+ public void setHeight(final int height) {
+ // Do nothing
}
/**
public void draw() {
// Setup my color
CellAttributes color = new CellAttributes();
+ CellAttributes mnemonicColor = new CellAttributes();
color.setTo(getTheme().getColor(colorKey));
- CellAttributes background = getWindow().getBackground();
- color.setBackColor(background.getBackColor());
+ mnemonicColor.setTo(getTheme().getColor("tlabel.mnemonic"));
+ if (useWindowBackground) {
+ CellAttributes background = getWindow().getBackground();
+ color.setBackColor(background.getBackColor());
+ mnemonicColor.setBackColor(background.getBackColor());
+ }
+ putStringXY(0, 0, mnemonic.getRawLabel(), color);
+ if (mnemonic.getScreenShortcutIdx() >= 0) {
+ putCharXY(mnemonic.getScreenShortcutIdx(), 0,
+ mnemonic.getShortcut(), mnemonicColor);
+ }
+ }
- getScreen().putStringXY(0, 0, label, color);
+ // ------------------------------------------------------------------------
+ // TLabel -----------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get label raw text.
+ *
+ * @return label text
+ */
+ public String getLabel() {
+ return mnemonic.getRawLabel();
+ }
+
+ /**
+ * Get the mnemonic string for this label.
+ *
+ * @return mnemonic string
+ */
+ public MnemonicString getMnemonic() {
+ return mnemonic;
+ }
+
+ /**
+ * Set label text.
+ *
+ * @param label new label text
+ */
+ public void setLabel(final String label) {
+ mnemonic = new MnemonicString(label);
+ super.setWidth(StringUtils.width(mnemonic.getRawLabel()));
+ }
+
+ /**
+ * Get the label color.
+ *
+ * @return the ColorTheme key color to use for foreground text
+ */
+ public String getColorKey() {
+ return colorKey;
+ }
+
+ /**
+ * Set the label color.
+ *
+ * @param colorKey ColorTheme key color to use for foreground text
+ */
+ public void setColorKey(final String colorKey) {
+ this.colorKey = colorKey;
+ }
+
+ /**
+ * Act as though the mnemonic shortcut was pressed.
+ */
+ public void dispatch() {
+ if (action != null) {
+ action.DO(this);
+ }
}
}