org.eclipse.swt.widgets.Combo#getItems ( )源码实例Demo

private int calculateComboWidth( Combo combo ) {
  Image image = new Image( HopGui.getInstance().getDisplay(), 10, 10 );
  GC gc = new GC( image );

  int maxWidth = combo.getSize().x;
  for ( String item : combo.getItems() ) {
    int width = gc.textExtent( item ).x;
    if ( width > maxWidth ) {
      maxWidth = width;
    }
  }

  gc.dispose();
  image.dispose();

  return maxWidth;
}
 

/**
 * 获取项目属性字段集合
 * @return key 为属性名称，value 中第一个值为选中的属性值，第二个值为该属性对应的所有属性值集合
 */
public LinkedHashMap<String, Object[]> getAttributeMap() {
	LinkedHashMap<String, Object[]> mapAttr = new LinkedHashMap<String, Object[]>();
	if (lstCombo != null) {
		for (Combo cmb : lstCombo) {
			if (!cmb.isDisposed()) {
				ArrayList<String> lstAttrValue = new ArrayList<String>();
				for (String attrVal : cmb.getItems()) {
					lstAttrValue.add(TextUtil.stringToXML(attrVal));
				}
				mapAttr.put(TextUtil.stringToXML((String) cmb.getData()),
						new Object[] { TextUtil.stringToXML(cmb.getText()), lstAttrValue });
			}
		}
	}
	return mapAttr;
}
 

/**
 * 获取项目属性字段集合
 * @return key 为属性名称，value 中第一个值为选中的属性值，第二个值为该属性对应的所有属性值集合
 */
public LinkedHashMap<String, Object[]> getAttributeMap() {
	LinkedHashMap<String, Object[]> mapAttr = new LinkedHashMap<String, Object[]>();
	if (lstCombo != null) {
		for (Combo cmb : lstCombo) {
			if (!cmb.isDisposed()) {
				ArrayList<String> lstAttrValue = new ArrayList<String>();
				for (String attrVal : cmb.getItems()) {
					lstAttrValue.add(TextUtil.stringToXML(attrVal));
				}
				mapAttr.put(TextUtil.stringToXML((String) cmb.getData()),
						new Object[] { TextUtil.stringToXML(cmb.getText()), lstAttrValue });
			}
		}
	}
	return mapAttr;
}
 

protected void select(Combo combo, Enum<?> enu) {
	String[] items = combo.getItems();
	for (int i = 0; i < items.length; i++) {
		if (enu.toString().equals(items[i])) {
			combo.select(i);
			break;
		}
	}
}
 

/**
 * Set the source path that was selected by the user by various input
 * methods (Browse button, typing, etc).
 *
 * Clients can also call this to set the path programmatically (hard-coded
 * initial path) and this can also be overridden to be notified when the
 * source path changes.
 *
 * @param path
 *            the source path
 */
protected void setSourcePath(String path) {
    Combo sourceField = getSourceField();
    if (sourceField == null) {
        return;
    }

    if (path.length() > 0) {
        String[] currentItems = sourceField.getItems();
        int selectionIndex = -1;
        for (int i = 0; i < currentItems.length; i++) {
            if (currentItems[i].equals(path)) {
                selectionIndex = i;
            }
        }
        if (selectionIndex < 0) {
            int oldLength = currentItems.length;
            String[] newItems = new String[oldLength + 1];
            System.arraycopy(currentItems, 0, newItems, 0, oldLength);
            newItems[oldLength] = path;
            sourceField.setItems(newItems);
            selectionIndex = oldLength;
        }
        sourceField.select(selectionIndex);
    }
    resetSelection();
}
 

private void saveComboValues(Combo combo, IDialogSettings settings, String key) {
    // update names history
    String[] directoryNames = settings.getArray(key);
    if (directoryNames == null) {
        directoryNames = new String[0];
    }

    String items[] = combo.getItems();
    for (int i = 0; i < items.length; i++) {
        directoryNames = addToHistory(directoryNames, items[i]);
    }
    settings.put(key, directoryNames);
}
 

@Override
public boolean performOk() {
	if (lstText != null) {
		LinkedHashMap<String, String> mapField = new LinkedHashMap<String, String>();
		for (Text txt : lstText) {
			if (!txt.isDisposed()) {
				mapField.put(TextUtil.stringToXML((String) txt.getData()), TextUtil.stringToXML(txt.getText()).trim());
			}
		}
		projCfgBean.setMapField(mapField);
	}

	if (lstCombo != null) {
		LinkedHashMap<String, Object[]> mapAttr = new LinkedHashMap<String, Object[]>();
		for (Combo cmb : lstCombo) {
			if (!cmb.isDisposed()) {
				ArrayList<String> lstAttrValue = new ArrayList<String>();
				for (String attrVal : cmb.getItems()) {
					lstAttrValue.add(TextUtil.stringToXML(attrVal));
				}
				mapAttr.put(TextUtil.stringToXML((String) cmb.getData()),
						new Object[] { TextUtil.stringToXML(cmb.getText()), lstAttrValue });
			}
		}
		projCfgBean.setMapAttr(mapAttr);
	}
	return super.performOk();
}
 

@Override
public boolean performOk() {
	if (lstText != null) {
		LinkedHashMap<String, String> mapField = new LinkedHashMap<String, String>();
		for (Text txt : lstText) {
			if (!txt.isDisposed()) {
				mapField.put(TextUtil.stringToXML((String) txt.getData()), TextUtil.stringToXML(txt.getText()).trim());
			}
		}
		projCfgBean.setMapField(mapField);
	}

	if (lstCombo != null) {
		LinkedHashMap<String, Object[]> mapAttr = new LinkedHashMap<String, Object[]>();
		for (Combo cmb : lstCombo) {
			if (!cmb.isDisposed()) {
				ArrayList<String> lstAttrValue = new ArrayList<String>();
				for (String attrVal : cmb.getItems()) {
					lstAttrValue.add(TextUtil.stringToXML(attrVal));
				}
				mapAttr.put(TextUtil.stringToXML((String) cmb.getData()),
						new Object[] { TextUtil.stringToXML(cmb.getText()), lstAttrValue });
			}
		}
		projCfgBean.setMapAttr(mapAttr);
	}
	return super.performOk();
}
 

/**
 * Returns the index of the item, or adds it to the combo.
 *
 * @param combo
 * @param value
 * @return
 */
private int indexOf(Combo combo, char value){
    for (int i=0; i < combo.getItems().length; i++) {
        if (combo.getItem(i).toCharArray()[1]==value) {
            return i;
        }
    }
    combo.add("("+String.valueOf(value)+")"); //$NON-NLS-1$ //$NON-NLS-2$
    return combo.getItemCount()-1;
}