/*
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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.widget;
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import android.content.Context;
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import android.text.Editable;
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import android.text.Selection;
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import android.text.Spannable;
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import android.text.TextUtils;
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import android.text.method.ArrowKeyMovementMethod;
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import android.text.method.MovementMethod;
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import android.util.AttributeSet;
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import android.view.accessibility.AccessibilityNodeInfo;
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/*
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* This is supposed to be a *very* thin veneer over TextView.
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* Do not make any changes here that do anything that a TextView
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* with a key listener and a movement method wouldn't do!
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*/
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/**
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* A user interface element for entering and modifying text.
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* When you define an edit text widget, you must specify the
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* {@link android.R.styleable#TextView_inputType}
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* attribute. For example, for plain text input set inputType to "text":
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* <p>
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* <pre>
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* <EditText
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* android:id="@+id/plain_text_input"
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* android:layout_height="wrap_content"
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* android:layout_width="match_parent"
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* android:inputType="text"/></pre>
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*
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* Choosing the input type configures the keyboard type that is shown, acceptable characters,
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* and appearance of the edit text.
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* For example, if you want to accept a secret number, like a unique pin or serial number,
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* you can set inputType to "numericPassword".
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* An inputType of "numericPassword" results in an edit text that accepts numbers only,
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* shows a numeric keyboard when focused, and masks the text that is entered for privacy.
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* <p>
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* See the <a href="{@docRoot}guide/topics/ui/controls/text.html">Text Fields</a>
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* guide for examples of other
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* {@link android.R.styleable#TextView_inputType} settings.
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* </p>
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* <p>You also can receive callbacks as a user changes text by
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* adding a {@link android.text.TextWatcher} to the edit text.
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* This is useful when you want to add auto-save functionality as changes are made,
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* or validate the format of user input, for example.
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* You add a text watcher using the {@link TextView#addTextChangedListener} method.
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* </p>
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* <p>
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* This widget does not support auto-sizing text.
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* <p>
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* <b>XML attributes</b>
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* <p>
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* See {@link android.R.styleable#EditText EditText Attributes},
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* {@link android.R.styleable#TextView TextView Attributes},
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* {@link android.R.styleable#View View Attributes}
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*/
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public class EditText extends TextView {
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public EditText(Context context) {
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this(context, null);
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}
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public EditText(Context context, AttributeSet attrs) {
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this(context, attrs, com.android.internal.R.attr.editTextStyle);
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}
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public EditText(Context context, AttributeSet attrs, int defStyleAttr) {
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this(context, attrs, defStyleAttr, 0);
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}
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public EditText(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
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super(context, attrs, defStyleAttr, defStyleRes);
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}
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@Override
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public boolean getFreezesText() {
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return true;
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}
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@Override
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protected boolean getDefaultEditable() {
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return true;
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}
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@Override
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protected MovementMethod getDefaultMovementMethod() {
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return ArrowKeyMovementMethod.getInstance();
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}
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@Override
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public Editable getText() {
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CharSequence text = super.getText();
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// This can only happen during construction.
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if (text == null) {
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return null;
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}
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if (text instanceof Editable) {
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return (Editable) super.getText();
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}
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super.setText(text, BufferType.EDITABLE);
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return (Editable) super.getText();
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}
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@Override
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public void setText(CharSequence text, BufferType type) {
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super.setText(text, BufferType.EDITABLE);
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}
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/**
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* Convenience for {@link Selection#setSelection(Spannable, int, int)}.
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*/
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public void setSelection(int start, int stop) {
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Selection.setSelection(getText(), start, stop);
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}
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/**
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* Convenience for {@link Selection#setSelection(Spannable, int)}.
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*/
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public void setSelection(int index) {
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Selection.setSelection(getText(), index);
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}
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/**
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* Convenience for {@link Selection#selectAll}.
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*/
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public void selectAll() {
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Selection.selectAll(getText());
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}
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/**
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* Convenience for {@link Selection#extendSelection}.
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*/
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public void extendSelection(int index) {
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Selection.extendSelection(getText(), index);
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}
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/**
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* Causes words in the text that are longer than the view's width to be ellipsized instead of
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* broken in the middle. {@link TextUtils.TruncateAt#MARQUEE
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* TextUtils.TruncateAt#MARQUEE} is not supported.
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*
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* @param ellipsis Type of ellipsis to be applied.
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* @throws IllegalArgumentException When the value of <code>ellipsis</code> parameter is
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* {@link TextUtils.TruncateAt#MARQUEE}.
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* @see TextView#setEllipsize(TextUtils.TruncateAt)
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*/
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@Override
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public void setEllipsize(TextUtils.TruncateAt ellipsis) {
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if (ellipsis == TextUtils.TruncateAt.MARQUEE) {
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throw new IllegalArgumentException("EditText cannot use the ellipsize mode "
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+ "TextUtils.TruncateAt.MARQUEE");
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}
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super.setEllipsize(ellipsis);
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}
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@Override
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public CharSequence getAccessibilityClassName() {
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return EditText.class.getName();
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}
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/** @hide */
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@Override
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protected boolean supportsAutoSizeText() {
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return false;
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}
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/** @hide */
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@Override
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public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
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super.onInitializeAccessibilityNodeInfoInternal(info);
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if (isEnabled()) {
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info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SET_TEXT);
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}
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}
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}
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