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package com.javispedro.vndroid;
import android.os.Bundle;
import android.util.Log;
import android.view.accessibility.AccessibilityNodeInfo;
import androidx.annotation.Nullable;
import com.javispedro.vndroid.keymaps.KeyActionHandler;
import com.javispedro.vndroid.keymaps.KeyHandler;
import java.util.ArrayList;
import java.util.List;
public class KeyEventOutput implements KeyActionHandler {
private final String TAG = KeyEventOutput.class.getSimpleName();
private final List<KeyHandler> handlers = new ArrayList<KeyHandler>();
@Nullable
private AccessibilityNodeInfo getFocusNode() {
ControlService service = ControlService.getInstance();
if (service != null) {
return service.findFocus(AccessibilityNodeInfo.FOCUS_INPUT);
}
return null;
}
public void addHandler(KeyHandler handler) {
handler.setActionHandler(this);
handlers.add(handler);
}
public void postKeyEvent(int key, boolean state) {
if (state) Log.d(TAG, "keysym pressed: " + Integer.toHexString(key));
for (KeyHandler handler : handlers) {
boolean handled;
if (state) {
handled = handler.keyDown(key);
} else {
handled = handler.keyUp(key);
}
if (handled) {
break;
}
}
}
@Override
public void postText(CharSequence text) {
AccessibilityNodeInfo node = getFocusNode();
if (node == null || !node.isEditable()) {
Log.d(TAG, "no input focus or not editable");
return;
}
final CharSequence curText = node.getText();
final int curTextLen = curText != null ? curText.length() : 0;
final int textLen = text.length();
int selStart = node.getTextSelectionStart();
int selEnd = node.getTextSelectionEnd();
StringBuilder builder = new StringBuilder(curTextLen + textLen);
Log.d(TAG, " cur text: " + curText + " start=" + selStart + " end=" + selEnd);
if (selStart == -1 || selEnd == -1 || curTextLen == 0) {
// No selection, no cursor
if (curTextLen > 0) builder.append(curText);
builder.append(text);
} else {
builder.append(curText.subSequence(0, selStart));
builder.append(text);
builder.append(curText.subSequence(selEnd, curText.length()));
selStart = selEnd + textLen;
selEnd = selStart;
}
Log.d(TAG, " new text: " + builder.toString() + " start=" + selStart + " end=" + selEnd);
Bundle args = new Bundle();
args.putCharSequence(AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE,
builder.toString());
node.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT, args);
if (selStart != -1 && selEnd != -1 && selStart != builder.length()) {
args = new Bundle();
args.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, selStart);
args.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, selEnd);
node.performAction(AccessibilityNodeInfo.ACTION_SET_SELECTION, args);
}
}
@Override
public void postChar(char c) {
AccessibilityNodeInfo node = getFocusNode();
if (node == null || !node.isEditable()) {
Log.d(TAG, "no input focus or not editable");
return;
}
final CharSequence curText = node.getText();
final int curTextLen = curText != null ? curText.length() : 0;
int selStart = node.getTextSelectionStart();
int selEnd = node.getTextSelectionEnd();
StringBuilder builder = new StringBuilder(curTextLen + 1);
Log.d(TAG, " cur text: " + curText + " start=" + selStart + " end=" + selEnd);
if (selStart == -1 || selEnd == -1 || curTextLen == 0) {
// No selection, no cursor
if (curTextLen > 0) builder.append(curText);
builder.append(c);
} else {
builder.append(curText.subSequence(0, selStart));
builder.append(c);
builder.append(curText.subSequence(selEnd, curText.length()));
selStart = selEnd + 1;
selEnd = selStart;
}
Log.d(TAG, " new text: " + builder.toString() + " start=" + selStart + " end=" + selEnd);
Bundle args = new Bundle();
args.putCharSequence(AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE,
builder.toString());
node.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT, args);
if (selStart != -1 && selEnd != -1 && selStart != builder.length()) {
args = new Bundle();
args.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, selStart);
args.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, selEnd);
node.performAction(AccessibilityNodeInfo.ACTION_SET_SELECTION, args);
}
}
@Override
public void postLocalAction(int action) {
AccessibilityNodeInfo node = getFocusNode();
if (node == null || !node.isEditable()) {
Log.d(TAG, "no input focus or not editable");
return;
}
final CharSequence curText = node.getText();
final int curTextLen = curText != null ? curText.length() : 0;
int selStart = node.getTextSelectionStart();
int selEnd = node.getTextSelectionEnd();
StringBuilder builder = null;
Log.d(TAG, " cur text: " + curText + " start=" + selStart + " end=" + selEnd);
switch (action) {
case KeyActionHandler.ACTION_BACKSPACE:
if (selStart == -1 || selEnd == -1 || curTextLen == 0) {
return;
}
builder = new StringBuilder(curTextLen - 1);
if (selStart == selEnd && selStart > 0) {
builder.append(curText.subSequence(0, selStart - 1));
builder.append(curText.subSequence(selEnd, curTextLen));
selStart = selStart - 1;
selEnd = selStart;
} else if (selStart != selEnd) {
builder.append(curText.subSequence(0, selStart));
builder.append(curText.subSequence(selEnd, curTextLen));
selEnd = selStart;
} else {
return;
}
break;
case KeyActionHandler.ACTION_DEL:
if (selStart == -1 || selEnd == -1 || curTextLen == 0) {
return;
}
builder = new StringBuilder(curTextLen - 1);
if (selStart == selEnd && selStart < curTextLen) {
builder.append(curText.subSequence(0, selStart));
builder.append(curText.subSequence(selEnd + 1, curTextLen));
selStart = selStart;
selEnd = selStart;
} else if (selStart != selEnd) {
builder.append(curText.subSequence(0, selStart));
builder.append(curText.subSequence(selEnd, curTextLen));
selEnd = selStart;
} else {
return;
}
break;
case KeyActionHandler.ACTION_MOVE_LEFT:
if (selStart == -1 || selEnd == -1 || curTextLen == 0) {
return;
}
if (selStart > 0) {
selStart = selStart - 1;
selEnd = selStart;
} else {
return;
}
break;
case KeyActionHandler.ACTION_MOVE_RIGHT:
if (selStart == -1 || selEnd == -1 || curTextLen == 0) {
return;
}
if (selEnd < curTextLen) {
selStart = selEnd + 1;
selEnd = selStart;
} else {
return;
}
break;
case KeyActionHandler.ACTION_MOVE_LEFTMOST:
selStart = 0;
selEnd = 0;
break;
case KeyActionHandler.ACTION_MOVE_RIGHTMOST:
if (curTextLen == 0) {
return;
}
selStart = curTextLen;
selEnd = curTextLen;
break;
case KeyActionHandler.ACTION_SELECT_LEFT:
if (selStart == -1 || selEnd == -1 || curTextLen == 0) {
return;
}
if (selStart > 0) {
selStart = selStart - 1;
} else {
return;
}
break;
case KeyActionHandler.ACTION_SELECT_RIGHT:
if (selStart == -1 || selEnd == -1 || curTextLen == 0) {
return;
}
if (selEnd < curTextLen) {
selEnd = selEnd + 1;
} else {
return;
}
break;
case KeyActionHandler.ACTION_SELECT_LEFTMOST:
selStart = 0;
break;
case KeyActionHandler.ACTION_SELECT_RIGHTMOST:
if (curTextLen == 0) {
return;
}
selEnd = curTextLen;
break;
default:
return;
}
if (builder != null) {
Log.d(TAG, " new text: " + builder.toString() + " start=" + selStart + " end=" + selEnd);
} else {
Log.d(TAG, " new start=" + selStart + " end=" + selEnd);
}
if (builder != null && builder.toString() != curText) {
Bundle args = new Bundle();
args.putCharSequence(AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE,
builder.toString());
node.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT, args);
}
if (selStart != -1 && selEnd != -1 && (builder == null || selStart != builder.length())) {
Bundle args = new Bundle();
args.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, selStart);
args.putInt(AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, selEnd);
node.performAction(AccessibilityNodeInfo.ACTION_SET_SELECTION, args);
}
}
@Override
public void postGlobalAction(int action) {
ControlService service = ControlService.getInstance();
if (service != null) {
if (!service.performGlobalAction(action)) {
Log.e(TAG, "could not perform global action: " + action);
}
}
}
}
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