listbox.java

最强手机阅读器Anyview3.0版的界面代码

package com.ismyway.fairyui;

import javax.microedition.lcdui.Command;

import com.ismyway.util.ArrayList;


public class ListBox extends Row {
	private boolean multiple = false;
	ValueChangeListener itemListener = null;

	public ListBox() {
	}

	public ListBox(boolean radioType) {
		this.multiple = radioType;
	}

	public void add(ListElement el) {
		el.addCommand(new Command("" + components.size(), Command.OK, 1));
		el.setType(multiple);
		el.setContainer(this);
		super.add(el);
	}

	public ArrayList getCheckedElements() {
		ArrayList res = new ArrayList();
		for (int i = 0; i < components.size(); ++i) {
			ListElement e = (ListElement) components.get(i);
			if (e.isChecked()) {
				res.add(e);
			}
		}
		return res;
	}
	
	public int getCheckedIndex() {
		for (int i = 0; i < components.size(); ++i) {
			ListElement e = (ListElement) components.get(i);
			if (e.isChecked()) {
				return i;
			}
		}
		return -1;
	}
	
	public ListElement getCheckedItem() {
		for (int i = 0; i < components.size(); ++i) {
			ListElement e = (ListElement) components.get(i);
			if (e.isChecked()) {
				return e;
			}
		}
		return null;
	}

	public boolean generateEvent() {
		int index = Integer.parseInt(getCommand().getLabel());
		if (multiple) {
			for (int i = 0; i < components.size(); i++) {
				((ListElement) components.get(i)).setChecked(false);
			}
			((ListElement) components.get(index)).setChecked(true);
		} else {
			ListElement le = (ListElement) components.get(index);
			le.setChecked(!le.isChecked());
		}
		if (null != itemListener) {
			itemListener.valueChanged(this);
		}
		return true;
	}

	public boolean isMultiple() {
		return multiple;
	}

	public void setMultiple(boolean multiple) {
		this.multiple = multiple;
	}

	public ValueChangeListener getItemListener() {
		return itemListener;
	}

	public void setItemListener(ValueChangeListener itemListener) {
		this.itemListener = itemListener;
	}
}