50 lines
1.4 KiB
Java
50 lines
1.4 KiB
Java
package org.mian.gitnex.helpers.codeeditor;
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import android.text.Layout;
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import android.view.View;
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import android.view.accessibility.AccessibilityEvent;
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import android.widget.EditText;
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import androidx.annotation.NonNull;
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/**
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* @author AmrDeveloper
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* @author M M Arif
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*/
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public class SourcePositionListener {
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private OnPositionChanged onPositionChanged;
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public SourcePositionListener(EditText editText) {
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View.AccessibilityDelegate viewAccessibility =
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new View.AccessibilityDelegate() {
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@Override
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public void sendAccessibilityEvent(@NonNull View host, int eventType) {
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super.sendAccessibilityEvent(host, eventType);
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if (eventType == AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED
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&& onPositionChanged != null) {
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int selectionStart = editText.getSelectionStart();
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Layout layout = editText.getLayout();
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if (layout == null) {
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return;
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}
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int line = editText.getLayout().getLineForOffset(selectionStart);
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int column = selectionStart - editText.getLayout().getLineStart(line);
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onPositionChanged.onPositionChange(line + 1, column + 1);
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}
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}
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};
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editText.setAccessibilityDelegate(viewAccessibility);
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}
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public void setOnPositionChanged(OnPositionChanged listener) {
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onPositionChanged = listener;
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}
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@FunctionalInterface
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public interface OnPositionChanged {
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void onPositionChange(int line, int column);
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}
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}
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