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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.internal.widget;
import android.text.InputFilter;
import android.text.Spanned;
import android.widget.TextView;
/**
* Helper class to disable input on a TextView. The input is disabled by swapping in an InputFilter
* that discards all changes. Use with care if you have customized InputFilter on the target
* TextView.
*/
public class TextViewInputDisabler {
private TextView mTextView;
private InputFilter[] mDefaultFilters;
private InputFilter[] mNoInputFilters = new InputFilter[] {
new InputFilter () {
@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest,
int dstart, int dend) {
return "";
}
}
};
public TextViewInputDisabler(TextView textView) {
mTextView = textView;
mDefaultFilters = mTextView.getFilters();
}
public void setInputEnabled(boolean enabled) {
mTextView.setFilters(enabled ? mDefaultFilters : mNoInputFilters);
}
}
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