*
* <EditText * android:id="@+id/plain_text_input" * android:layout_height="wrap_content" * android:layout_width="match_parent" * android:inputType="text"/>* * Choosing the input type configures the keyboard type that is shown, acceptable characters, * and appearance of the edit text. * For example, if you want to accept a secret number, like a unique pin or serial number, * you can set inputType to {@link android.R.styleable#TextView_inputType numberPassword}. * An input type of {@code numberPassword} results in an edit text that accepts numbers only, * shows a numeric keyboard when focused, and masks the text that is entered for privacy. *
* See the Text Fields * guide for examples of other * {@link android.R.styleable#TextView_inputType} settings. *
*You also can receive callbacks as a user changes text by * adding a {@link android.text.TextWatcher} to the edit text. * This is useful when you want to add auto-save functionality as changes are made, * or validate the format of user input, for example. * You add a text watcher using the {@link TextView#addTextChangedListener} method. *
** This widget does not support auto-sizing text. *
* XML attributes *
* See {@link android.R.styleable#EditText EditText Attributes},
* {@link android.R.styleable#TextView TextView Attributes},
* {@link android.R.styleable#View View Attributes}
*
* @attr ref android.R.styleable#EditText_enableTextStylingShortcuts
*/
public class EditText extends TextView {
// True if the style shortcut is enabled.
private boolean mStyleShortcutsEnabled = false;
private static final int ID_BOLD = android.R.id.bold;
private static final int ID_ITALIC = android.R.id.italic;
private static final int ID_UNDERLINE = android.R.id.underline;
/** @hide */
@ChangeId
@EnabledSince(targetSdkVersion = Build.VERSION_CODES.VANILLA_ICE_CREAM)
public static final long LINE_HEIGHT_FOR_LOCALE = 303326708L;
public EditText(Context context) {
this(context, null);
}
public EditText(Context context, AttributeSet attrs) {
this(context, attrs, com.android.internal.R.attr.editTextStyle);
}
public EditText(Context context, AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public EditText(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
final Resources.Theme theme = context.getTheme();
final TypedArray a = theme.obtainStyledAttributes(attrs,
com.android.internal.R.styleable.EditText, defStyleAttr, defStyleRes);
try {
final int n = a.getIndexCount();
for (int i = 0; i < n; ++i) {
int attr = a.getIndex(i);
switch (attr) {
case com.android.internal.R.styleable.EditText_enableTextStylingShortcuts:
mStyleShortcutsEnabled = a.getBoolean(attr, false);
break;
}
}
} finally {
a.recycle();
}
boolean hasUseLocalePreferredLineHeightForMinimumInt = false;
boolean useLocalePreferredLineHeightForMinimumInt = false;
TypedArray tvArray = theme.obtainStyledAttributes(attrs,
com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
try {
hasUseLocalePreferredLineHeightForMinimumInt =
tvArray.hasValue(R.styleable.TextView_useLocalePreferredLineHeightForMinimum);
if (hasUseLocalePreferredLineHeightForMinimumInt) {
useLocalePreferredLineHeightForMinimumInt = tvArray.getBoolean(
R.styleable.TextView_useLocalePreferredLineHeightForMinimum, false);
}
} finally {
tvArray.recycle();
}
if (!hasUseLocalePreferredLineHeightForMinimumInt) {
useLocalePreferredLineHeightForMinimumInt =
CompatChanges.isChangeEnabled(LINE_HEIGHT_FOR_LOCALE);
}
setLocalePreferredLineHeightForMinimumUsed(useLocalePreferredLineHeightForMinimumInt);
}
@Override
public boolean getFreezesText() {
return true;
}
@Override
protected boolean getDefaultEditable() {
return true;
}
@Override
protected MovementMethod getDefaultMovementMethod() {
return ArrowKeyMovementMethod.getInstance();
}
@Override
public Editable getText() {
CharSequence text = super.getText();
// This can only happen during construction.
if (text == null) {
return null;
}
if (text instanceof Editable) {
return (Editable) text;
}
super.setText(text, BufferType.EDITABLE);
return (Editable) super.getText();
}
@Override
public void setText(CharSequence text, BufferType type) {
super.setText(text, BufferType.EDITABLE);
}
/**
* Convenience for {@link Selection#setSelection(Spannable, int, int)}.
*/
public void setSelection(int start, int stop) {
Selection.setSelection(getText(), start, stop);
}
/**
* Convenience for {@link Selection#setSelection(Spannable, int)}.
*/
public void setSelection(int index) {
Selection.setSelection(getText(), index);
}
/**
* Convenience for {@link Selection#selectAll}.
*/
public void selectAll() {
Selection.selectAll(getText());
}
/**
* Convenience for {@link Selection#extendSelection}.
*/
public void extendSelection(int index) {
Selection.extendSelection(getText(), index);
}
/**
* Causes words in the text that are longer than the view's width to be ellipsized instead of
* broken in the middle. {@link TextUtils.TruncateAt#MARQUEE
* TextUtils.TruncateAt#MARQUEE} is not supported.
*
* @param ellipsis Type of ellipsis to be applied.
* @throws IllegalArgumentException When the value of ellipsis parameter is
* {@link TextUtils.TruncateAt#MARQUEE}.
* @see TextView#setEllipsize(TextUtils.TruncateAt)
*/
@Override
public void setEllipsize(TextUtils.TruncateAt ellipsis) {
if (ellipsis == TextUtils.TruncateAt.MARQUEE) {
throw new IllegalArgumentException("EditText cannot use the ellipsize mode "
+ "TextUtils.TruncateAt.MARQUEE");
}
super.setEllipsize(ellipsis);
}
@Override
public CharSequence getAccessibilityClassName() {
return EditText.class.getName();
}
/** @hide */
@Override
protected boolean supportsAutoSizeText() {
return false;
}
@Override
public boolean onKeyShortcut(int keyCode, KeyEvent event) {
if (event.hasModifiers(KeyEvent.META_CTRL_ON)) {
// Handle Ctrl-only shortcuts.
switch (keyCode) {
case KeyEvent.KEYCODE_B:
if (mStyleShortcutsEnabled && hasSelection()) {
return onTextContextMenuItem(ID_BOLD);
}
break;
case KeyEvent.KEYCODE_I:
if (mStyleShortcutsEnabled && hasSelection()) {
return onTextContextMenuItem(ID_ITALIC);
}
break;
case KeyEvent.KEYCODE_U:
if (mStyleShortcutsEnabled && hasSelection()) {
return onTextContextMenuItem(ID_UNDERLINE);
}
break;
}
}
return super.onKeyShortcut(keyCode, event);
}
@Override
public boolean onTextContextMenuItem(int id) {
// TODO: Move to switch-case once the resource ID is finalized.
if (id == ID_BOLD || id == ID_ITALIC || id == ID_UNDERLINE) {
return performStylingAction(id);
}
return super.onTextContextMenuItem(id);
}
private boolean performStylingAction(int actionId) {
final int selectionStart = getSelectionStart();
final int selectionEnd = getSelectionEnd();
if (selectionStart < 0 || selectionEnd < 0) {
return false; // There is no selection.
}
int min = Math.min(selectionStart, selectionEnd);
int max = Math.max(selectionStart, selectionEnd);
Spannable spannable = getText();
if (actionId == ID_BOLD) {
return SpanUtils.toggleBold(spannable, min, max);
} else if (actionId == ID_ITALIC) {
return SpanUtils.toggleItalic(spannable, min, max);
} else if (actionId == ID_UNDERLINE) {
return SpanUtils.toggleUnderline(spannable, min, max);
}
return false;
}
/**
* Enables styls shortcuts, e.g. Ctrl+B for making text bold.
*
* @param enabled true for enabled, false for disabled.
*/
public void setStyleShortcutsEnabled(boolean enabled) {
mStyleShortcutsEnabled = enabled;
}
/**
* Return true if style shortcut is enabled, otherwise returns false.
* @return true if style shortcut is enabled, otherwise returns false.
*/
public boolean isStyleShortcutEnabled() {
return mStyleShortcutsEnabled;
}
}