104 lines
3.4 KiB
Java
104 lines
3.4 KiB
Java
package org.thoughtcrime.securesms.util;
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import android.annotation.SuppressLint;
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import android.content.Context;
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import android.graphics.Color;
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import androidx.core.content.ContextCompat;
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import android.text.Layout;
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import android.text.Selection;
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import android.text.Spannable;
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import android.text.method.LinkMovementMethod;
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import android.view.GestureDetector;
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import android.view.MotionEvent;
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import android.view.View;
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import android.widget.TextView;
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import network.loki.messenger.R;
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public class LongClickMovementMethod extends LinkMovementMethod {
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@SuppressLint("StaticFieldLeak")
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private static LongClickMovementMethod sInstance;
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private final GestureDetector gestureDetector;
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private View widget;
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private LongClickCopySpan currentSpan;
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private LongClickMovementMethod(final Context context) {
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gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
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@Override
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public void onLongPress(MotionEvent e) {
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if (currentSpan != null && widget != null) {
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currentSpan.onLongClick(widget);
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widget = null;
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currentSpan = null;
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}
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}
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@Override
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public boolean onSingleTapUp(MotionEvent e) {
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if (currentSpan != null && widget != null) {
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currentSpan.onClick(widget);
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widget = null;
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currentSpan = null;
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}
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return true;
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}
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});
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}
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@Override
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public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
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int action = event.getAction();
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if (action == MotionEvent.ACTION_UP ||
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action == MotionEvent.ACTION_DOWN) {
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int x = (int) event.getX();
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int y = (int) event.getY();
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x -= widget.getTotalPaddingLeft();
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y -= widget.getTotalPaddingTop();
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x += widget.getScrollX();
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y += widget.getScrollY();
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Layout layout = widget.getLayout();
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int line = layout.getLineForVertical(y);
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int off = layout.getOffsetForHorizontal(line, x);
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LongClickCopySpan longClickCopySpan[] = buffer.getSpans(off, off, LongClickCopySpan.class);
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if (longClickCopySpan.length != 0) {
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LongClickCopySpan aSingleSpan = longClickCopySpan[0];
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if (action == MotionEvent.ACTION_DOWN) {
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Selection.setSelection(buffer, buffer.getSpanStart(aSingleSpan),
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buffer.getSpanEnd(aSingleSpan));
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aSingleSpan.setHighlighted(true,
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ContextCompat.getColor(widget.getContext(), R.color.touch_highlight));
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} else {
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Selection.removeSelection(buffer);
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aSingleSpan.setHighlighted(false, Color.TRANSPARENT);
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}
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this.currentSpan = aSingleSpan;
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this.widget = widget;
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return gestureDetector.onTouchEvent(event);
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}
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} else if (action == MotionEvent.ACTION_CANCEL) {
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// Remove Selections.
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LongClickCopySpan[] spans = buffer.getSpans(Selection.getSelectionStart(buffer),
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Selection.getSelectionEnd(buffer), LongClickCopySpan.class);
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for (LongClickCopySpan aSpan : spans) {
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aSpan.setHighlighted(false, Color.TRANSPARENT);
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}
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Selection.removeSelection(buffer);
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return gestureDetector.onTouchEvent(event);
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}
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return super.onTouchEvent(widget, buffer, event);
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}
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public static LongClickMovementMethod getInstance(Context context) {
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if (sInstance == null) {
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sInstance = new LongClickMovementMethod(context.getApplicationContext());
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}
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return sInstance;
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}
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} |