Java BasicComboBoxRenderer.UIResource方法代码示例

import javax.swing.plaf.basic.BasicComboBoxRenderer; //导入方法依赖的package包/类
@Override
protected ListCellRenderer createRenderer() {
  return new BasicComboBoxRenderer.UIResource() {
    @Override
    public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
      final Component c = super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
      if (c instanceof JComponent) {
        final JComponent jc = (JComponent)c;
        if (index == -1) {
          jc.setOpaque(false);
          jc.setForeground(list.getForeground());
        } else {
          jc.setOpaque(true);
        }
      }
      return c;
    }
  };
}
 

import javax.swing.plaf.basic.BasicComboBoxRenderer; //导入方法依赖的package包/类
@Override
protected ListCellRenderer createRenderer() {
  return new BasicComboBoxRenderer.UIResource() {
    @Override
    public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
      final Component c = super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
      if (c instanceof JComponent) {
        final JComponent jc = (JComponent)c;
        if (index == -1) {
          jc.setOpaque(false);
          jc.setForeground(list.getForeground());
        }
        else {
          jc.setOpaque(true);
        }
      }
      return c;
    }
  };
}
 

import javax.swing.plaf.basic.BasicComboBoxRenderer; //导入方法依赖的package包/类
protected ListCellRenderer createRenderer()
/* 105:    */   {
/* 106:186 */     if (this.tableCellEditor) {
/* 107:187 */       return super.createRenderer();
/* 108:    */     }
/* 109:189 */     BasicComboBoxRenderer renderer = new BasicComboBoxRenderer.UIResource();
/* 110:190 */     renderer.setBorder(UIManager.getBorder("ComboBox.rendererBorder"));
/* 111:191 */     return renderer;
/* 112:    */   }
 

import javax.swing.plaf.basic.BasicComboBoxRenderer; //导入方法依赖的package包/类
/**
 * Creates the default renderer that will be used in a non-editiable combo
 * box. A default renderer will used only if a renderer has not been
 * explicitly set with {@code setRenderer}.<p>
 *
 * This method differs from the superclass implementation
 * in that it uses an empty border with wider left and right margins
 * of 2 pixels instead of 1.
 *
 * @return a {@code ListCellRender} used for the combo box
 * @see javax.swing.JComboBox#setRenderer
 */
@Override
protected ListCellRenderer createRenderer() {
    if (tableCellEditor) {
        return super.createRenderer();
    }
    BasicComboBoxRenderer renderer = new BasicComboBoxRenderer.UIResource();
    renderer.setBorder(UIManager.getBorder("ComboBox.rendererBorder"));
    return renderer;
}
 

import javax.swing.plaf.basic.BasicComboBoxRenderer; //导入方法依赖的package包/类
/**
 * Creates the default renderer that will be used in a non-editiable combo
 * box. A default renderer will used only if a renderer has not been
 * explicitly set with {@code setRenderer}.<p>
 *
 * This method differs from the superclass implementation in that
 * it uses an empty border with the default left and right text insets,
 * the same as used by a combo box editor.
 *
 * @return a {@code ListCellRender} used for the combo box
 * @see javax.swing.JComboBox#setRenderer
 */
@Override
protected ListCellRenderer createRenderer() {
    if (tableCellEditor) {
        return super.createRenderer();
    }
    BasicComboBoxRenderer renderer = new BasicComboBoxRenderer.UIResource();
    renderer.setBorder(UIManager.getBorder("ComboBox.rendererBorder"));
    return renderer;
}
 

import javax.swing.plaf.basic.BasicComboBoxRenderer; //导入方法依赖的package包/类
/**
 * Checks and answer whether the border of the given renderer component
 * can be removed temporarily, so the combo's selection background will
 * be consistent with the default renderer and native appearance.
 * This test is invoked from {@code #paintCurrentValue}.<p>
 *
 * It is safe to remove an EmptyBorder if the component doesn't override
 * {@code #update}, {@code #paint} and {@code #paintBorder}.
 * Since we know the default renderer, we can remove its border.<p>
 *
 * Custom renderers may set a hint to make their border removable.
 * To do so, set the client property "isBorderRemovable"
 * to {@code Boolean.TRUE}. If this client property is set,
 * its value will be returned. If it is not set, {@code true} is returned
 * if and only if the component's border is an EmptyBorder.
 *
 * @param rendererComponent  the renderer component to check
 * @return true if the component's border can be removed, false if not
 * @see #paintCurrentValue(Graphics, Rectangle, boolean)
 */
protected boolean isRendererBorderRemovable(JComponent rendererComponent) {
    if (rendererComponent instanceof BasicComboBoxRenderer.UIResource) {
        return true;
    }
    Object hint = rendererComponent.getClientProperty(Options.COMBO_RENDERER_IS_BORDER_REMOVABLE);
    if (hint != null) {
        return Boolean.TRUE.equals(hint);
    }
    Border border = rendererComponent.getBorder();
    return border instanceof EmptyBorder;
}