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	private boolean lastInputWasTab = false;
36
37	protected KeyboardListener keyboardListener;
38
39	@Override
40	public boolean onKeyDown(int keyCode, KeyEvent e) {
41		if (keyCode == KeyEvent.KEYCODE_ENTER && !e.isShiftPressed()) {
42			lastInputWasTab = false;
43			if (keyboardListener != null && keyboardListener.onEnterPressed()) {
44				return true;
45			}
46		} else if (keyCode == KeyEvent.KEYCODE_TAB && !e.isAltPressed() && !e.isCtrlPressed()) {
47			if (keyboardListener != null && keyboardListener.onTabPressed(this.lastInputWasTab)) {
48				lastInputWasTab = true;
49				return true;
50			}
51		} else {
52			lastInputWasTab = false;
53		}
54		return super.onKeyDown(keyCode, e);
55	}
56
57	@Override
58	public void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
59		super.onTextChanged(text,start,lengthBefore,lengthAfter);
60		lastInputWasTab = false;
61		if (this.mTypingHandler != null && this.keyboardListener != null) {
62			this.mTypingHandler.removeCallbacks(mTypingTimeout);
63			this.mTypingHandler.postDelayed(mTypingTimeout, Config.TYPING_TIMEOUT * 1000);
64			final int length = text.length();
65			if (!isUserTyping && length > 0) {
66				this.isUserTyping = true;
67				this.keyboardListener.onTypingStarted();
68			} else if (length == 0) {
69				this.isUserTyping = false;
70				this.keyboardListener.onTextDeleted();
71			}
72			this.keyboardListener.onTextChanged();
73		}
74	}
75
76	public void setKeyboardListener(KeyboardListener listener) {
77		this.keyboardListener = listener;
78		if (listener != null) {
79			this.isUserTyping = false;
80		}
81	}
82
83	public interface KeyboardListener {
84		boolean onEnterPressed();
85		void onTypingStarted();
86		void onTypingStopped();
87		void onTextDeleted();
88		void onTextChanged();
89		boolean onTabPressed(boolean repeated);
90	}
91
92}