1package eu.siacs.conversations.ui;
 2
 3import android.content.Context;
 4import android.os.Handler;
 5import android.util.AttributeSet;
 6import android.view.KeyEvent;
 7import android.widget.EditText;
 8
 9import eu.siacs.conversations.Config;
10
11public class EditMessage extends EditText {
12
13	public EditMessage(Context context, AttributeSet attrs) {
14		super(context, attrs);
15	}
16
17	public EditMessage(Context context) {
18		super(context);
19	}
20
21	protected Handler mTypingHandler = new Handler();
22
23	protected Runnable mTypingTimeout = new Runnable() {
24		@Override
25		public void run() {
26			if (isUserTyping && keyboardListener != null) {
27				keyboardListener.onTypingStopped();
28				isUserTyping = false;
29			}
30		}
31	};
32
33	private boolean isUserTyping = false;
34
35	protected KeyboardListener keyboardListener;
36
37	@Override
38	public boolean onKeyDown(int keyCode, KeyEvent event) {
39		if (keyCode == KeyEvent.KEYCODE_ENTER) {
40			if (keyboardListener != null && keyboardListener.onEnterPressed()) {
41				return true;
42			}
43		}
44		return super.onKeyDown(keyCode, event);
45	}
46
47	@Override
48	public void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
49		super.onTextChanged(text,start,lengthBefore,lengthAfter);
50		if (this.mTypingHandler != null && this.keyboardListener != null) {
51			this.mTypingHandler.removeCallbacks(mTypingTimeout);
52			this.mTypingHandler.postDelayed(mTypingTimeout, Config.TYPING_TIMEOUT * 1000);
53			final int length = text.length();
54			if (!isUserTyping && length > 0) {
55				this.isUserTyping = true;
56				this.keyboardListener.onTypingStarted();
57			} else if (length == 0) {
58				this.isUserTyping = false;
59				this.keyboardListener.onTextDeleted();
60			}
61		}
62	}
63
64	public void setKeyboardListener(KeyboardListener listener) {
65		this.keyboardListener = listener;
66		if (listener != null) {
67			this.isUserTyping = false;
68		}
69	}
70
71	public interface KeyboardListener {
72		public boolean onEnterPressed();
73		public void onTypingStarted();
74		public void onTypingStopped();
75		public void onTextDeleted();
76	}
77
78}