61 lines
2.5 KiB
Java
61 lines
2.5 KiB
Java
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.text.method;
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import android.text.Spannable;
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import android.view.KeyEvent;
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import android.view.MotionEvent;
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import android.widget.TextView;
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/**
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* Provides cursor positioning, scrolling and text selection functionality in a {@link TextView}.
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* <p>
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* The {@link TextView} delegates handling of key events, trackball motions and touches to
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* the movement method for purposes of content navigation. The framework automatically
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* selects an appropriate movement method based on the content of the {@link TextView}.
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* </p><p>
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* This interface is intended for use by the framework; it should not be implemented
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* directly by applications.
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* </p>
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*/
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public interface MovementMethod {
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public void initialize(TextView widget, Spannable text);
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public boolean onKeyDown(TextView widget, Spannable text, int keyCode, KeyEvent event);
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public boolean onKeyUp(TextView widget, Spannable text, int keyCode, KeyEvent event);
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/**
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* If the key listener wants to other kinds of key events, return true,
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* otherwise return false and the caller (i.e. the widget host)
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* will handle the key.
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*/
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public boolean onKeyOther(TextView view, Spannable text, KeyEvent event);
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public void onTakeFocus(TextView widget, Spannable text, int direction);
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public boolean onTrackballEvent(TextView widget, Spannable text, MotionEvent event);
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public boolean onTouchEvent(TextView widget, Spannable text, MotionEvent event);
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public boolean onGenericMotionEvent(TextView widget, Spannable text, MotionEvent event);
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/**
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* Returns true if this movement method allows arbitrary selection
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* of any text; false if it has no selection (like a movement method
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* that only scrolls) or a constrained selection (for example
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* limited to links. The "Select All" menu item is disabled
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* if arbitrary selection is not allowed.
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*/
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public boolean canSelectArbitrarily();
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}
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