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Make sample IME aware of language switching

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This CL demonstrates how the new language switching functionality
should work by using the SoftKeyboard sample.

BUG: 15267645
Change-Id: I18ab25a0784979fe6028b97a22ff02bfd502d506
This commit is contained in:
Yohei Yukawa
2014-05-27 17:19:34 +09:00
parent 6f42309d3b
commit 88838a30af
9 changed files with 120 additions and 19 deletions
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samples/SoftKeyboard/res/drawable-hdpi/sym_keyboard_language_switch.png Normal file
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samples/SoftKeyboard/res/drawable-mdpi/sym_keyboard_language_switch.png Normal file
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1
samples/SoftKeyboard/res/xml/method.xml
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@@ -22,6 +22,7 @@
<input-method xmlns:android="http://schemas.android.com/apk/res/android"
android:settingsActivity="com.example.android.softkeyboard.ImePreferences"
android:supportsSwitchingToNextInputMethod="true"
>
<subtype
android:label="@string/label_subtype_generic"

10
samples/SoftKeyboard/res/xml/qwerty.xml
View File

@@ -69,8 +69,14 @@
<Row android:rowEdgeFlags="bottom">
<Key android:codes="-3" android:keyIcon="@drawable/sym_keyboard_done"
android:keyWidth="20%p" android:keyEdgeFlags="left"/>
<Key android:codes="-2" android:keyLabel="123" android:keyWidth="15%p"/>
android:keyWidth="15%p" android:keyEdgeFlags="left"/>
<Key android:codes="-2" android:keyLabel="123" android:keyWidth="10%p"/>
<!--
android:codes: -101 is not a framework-defined key code but a key code that is
privately defined in com.example.android.softkeyboard.LatinKeyboardView.
-->
<Key android:codes="-101" android:keyIcon="@drawable/sym_keyboard_language_switch"
android:keyWidth="10%p"/>
<Key android:codes="32" android:keyIcon="@drawable/sym_keyboard_space"
android:keyWidth="30%p" android:isRepeatable="true"/>
<Key android:codes="46,44" android:keyLabel=". ,"

10
samples/SoftKeyboard/res/xml/symbols.xml
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@@ -69,8 +69,14 @@
<Row android:rowEdgeFlags="bottom">
<Key android:codes="-3" android:keyIcon="@drawable/sym_keyboard_done"
android:keyWidth="20%p" android:keyEdgeFlags="left" />
<Key android:codes="-2" android:keyLabel="ABC" android:keyWidth="15%p" />
android:keyWidth="15%p" android:keyEdgeFlags="left" />
<Key android:codes="-2" android:keyLabel="ABC" android:keyWidth="10%p" />
<!--
android:codes: -101 is not a framework-defined key code but a key code that is
privately defined in com.example.android.softkeyboard.LatinKeyboardView.
-->
<Key android:codes="-101" android:keyIcon="@drawable/sym_keyboard_language_switch"
android:keyWidth="10%p" />
<Key android:codes="32" android:keyIcon="@drawable/sym_keyboard_space" android:keyWidth="30%p"
android:isRepeatable="true"/>
<Key android:codes="44" android:keyLabel="," android:keyWidth="15%p" />

10
samples/SoftKeyboard/res/xml/symbols_shift.xml
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@@ -69,8 +69,14 @@
<Row android:rowEdgeFlags="bottom">
<Key android:codes="-3" android:keyIcon="@drawable/sym_keyboard_done"
android:keyWidth="20%p" android:keyEdgeFlags="left" />
<Key android:codes="-2" android:keyLabel="ABC" android:keyWidth="15%p" />
android:keyWidth="15%p" android:keyEdgeFlags="left" />
<Key android:codes="-2" android:keyLabel="ABC" android:keyWidth="10%p" />
<!--
android:codes: -101 is not a framework-defined key code but a key code that is
privately defined in com.example.android.softkeyboard.LatinKeyboardView.
-->
<Key android:codes="-101" android:keyIcon="@drawable/sym_keyboard_language_switch"
android:keyWidth="10%p" />
<Key android:codes="32" android:keyIcon="@drawable/sym_keyboard_space" android:keyWidth="30%p"
android:isRepeatable="true"/>
<Key android:codes="8230" android:keyLabel="…" android:keyWidth="15%p" />

60
samples/SoftKeyboard/src/com/example/android/softkeyboard/LatinKeyboard.java
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@@ -22,11 +22,35 @@ import android.content.res.XmlResourceParser;
import android.graphics.drawable.Drawable;
import android.inputmethodservice.Keyboard;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodManager;
public class LatinKeyboard extends Keyboard {
private Key mEnterKey;
private Key mSpaceKey;
/**
* Stores the current state of the mode change key. Its width will be dynamically updated to
* match the region of {@link #mModeChangeKey} when {@link #mModeChangeKey} becomes invisible.
*/
private Key mModeChangeKey;
/**
* Stores the current state of the language switch key (a.k.a. globe key). This should be
* visible while {@link InputMethodManager#shouldOfferSwitchingToNextInputMethod(IBinder)}
* returns true. When this key becomes invisible, its width will be shrunk to zero.
*/
private Key mLanguageSwitchKey;
/**
* Stores the size and other information of {@link #mModeChangeKey} when
* {@link #mLanguageSwitchKey} is visible. This should be immutable and will be used only as a
* reference size when the visibility of {@link #mLanguageSwitchKey} is changed.
*/
private Key mSavedModeChangeKey;
/**
* Stores the size and other information of {@link #mLanguageSwitchKey} when it is visible.
* This should be immutable and will be used only as a reference size when the visibility of
* {@link #mLanguageSwitchKey} is changed.
*/
private Key mSavedLanguageSwitchKey;
public LatinKeyboard(Context context, int xmlLayoutResId) {
super(context, xmlLayoutResId);
@@ -45,10 +69,39 @@ public class LatinKeyboard extends Keyboard {
mEnterKey = key;
} else if (key.codes[0] == ' ') {
mSpaceKey = key;
} else if (key.codes[0] == Keyboard.KEYCODE_MODE_CHANGE) {
mModeChangeKey = key;
mSavedModeChangeKey = new LatinKey(res, parent, x, y, parser);
} else if (key.codes[0] == LatinKeyboardView.KEYCODE_LANGUAGE_SWITCH) {
mLanguageSwitchKey = key;
mSavedLanguageSwitchKey = new LatinKey(res, parent, x, y, parser);
}
return key;
}
/**
* Dynamically change the visibility of the language switch key (a.k.a. globe key).
* @param visible True if the language switch key should be visible.
*/
void setLanguageSwitchKeyVisibility(boolean visible) {
if (visible) {
// The language switch key should be visible. Restore the size of the mode change key
// and language switch key using the saved layout.
mModeChangeKey.width = mSavedModeChangeKey.width;
mModeChangeKey.x = mSavedModeChangeKey.x;
mLanguageSwitchKey.width = mSavedLanguageSwitchKey.width;
mLanguageSwitchKey.icon = mSavedLanguageSwitchKey.icon;
mLanguageSwitchKey.iconPreview = mSavedLanguageSwitchKey.iconPreview;
} else {
// The language switch key should be hidden. Change the width of the mode change key
// to fill the space of the language key so that the user will not see any strange gap.
mModeChangeKey.width = mSavedModeChangeKey.width + mSavedLanguageSwitchKey.width;
mLanguageSwitchKey.width = 0;
mLanguageSwitchKey.icon = null;
mLanguageSwitchKey.iconPreview = null;
}
}
/**
* This looks at the ime options given by the current editor, to set the
* appropriate label on the keyboard's enter key (if it has one).
@@ -57,7 +110,7 @@ public class LatinKeyboard extends Keyboard {
if (mEnterKey == null) {
return;
}
switch (options&(EditorInfo.IME_MASK_ACTION|EditorInfo.IME_FLAG_NO_ENTER_ACTION)) {
case EditorInfo.IME_ACTION_GO:
mEnterKey.iconPreview = null;
@@ -93,7 +146,8 @@ public class LatinKeyboard extends Keyboard {
static class LatinKey extends Keyboard.Key {
public LatinKey(Resources res, Keyboard.Row parent, int x, int y, XmlResourceParser parser) {
public LatinKey(Resources res, Keyboard.Row parent, int x, int y,
XmlResourceParser parser) {
super(res, parent, x, y, parser);
}

2
samples/SoftKeyboard/src/com/example/android/softkeyboard/LatinKeyboardView.java
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@@ -26,6 +26,8 @@ import android.view.inputmethod.InputMethodSubtype;
public class LatinKeyboardView extends KeyboardView {
static final int KEYCODE_OPTIONS = -100;
// TODO: Move this into android.inputmethodservice.Keyboard
static final int KEYCODE_LANGUAGE_SWITCH = -101;
public LatinKeyboardView(Context context, AttributeSet attrs) {
super(context, attrs);

46
samples/SoftKeyboard/src/com/example/android/softkeyboard/SoftKeyboard.java
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@@ -16,14 +16,17 @@
package com.example.android.softkeyboard;
import android.app.Dialog;
import android.inputmethodservice.InputMethodService;
import android.inputmethodservice.Keyboard;
import android.inputmethodservice.KeyboardView;
import android.os.IBinder;
import android.text.InputType;
import android.text.method.MetaKeyKeyListener;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import android.view.View;
import android.view.Window;
import android.view.inputmethod.CompletionInfo;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
@@ -114,10 +117,17 @@ public class SoftKeyboard extends InputMethodService
mInputView = (LatinKeyboardView) getLayoutInflater().inflate(
R.layout.input, null);
mInputView.setOnKeyboardActionListener(this);
mInputView.setKeyboard(mQwertyKeyboard);
setLatinKeyboard(mQwertyKeyboard);
return mInputView;
}
private void setLatinKeyboard(LatinKeyboard nextKeyboard) {
final boolean shouldSupportLanguageSwitchKey =
mInputMethodManager.shouldOfferSwitchingToNextInputMethod(getToken());
nextKeyboard.setLanguageSwitchKeyVisibility(shouldSupportLanguageSwitchKey);
mInputView.setKeyboard(nextKeyboard);
}
/**
* Called by the framework when your view for showing candidates needs to
* be generated, like {@link #onCreateInputView}.
@@ -247,7 +257,7 @@ public class SoftKeyboard extends InputMethodService
@Override public void onStartInputView(EditorInfo attribute, boolean restarting) {
super.onStartInputView(attribute, restarting);
// Apply the selected keyboard to the input view.
mInputView.setKeyboard(mCurKeyboard);
setLatinKeyboard(mCurKeyboard);
mInputView.closing();
final InputMethodSubtype subtype = mInputMethodManager.getCurrentInputMethodSubtype();
mInputView.setSubtypeOnSpaceKey(subtype);
@@ -509,19 +519,19 @@ public class SoftKeyboard extends InputMethodService
} else if (primaryCode == Keyboard.KEYCODE_CANCEL) {
handleClose();
return;
} else if (primaryCode == LatinKeyboardView.KEYCODE_LANGUAGE_SWITCH) {
handleLanguageSwitch();
return;
} else if (primaryCode == LatinKeyboardView.KEYCODE_OPTIONS) {
// Show a menu or somethin'
} else if (primaryCode == Keyboard.KEYCODE_MODE_CHANGE
&& mInputView != null) {
Keyboard current = mInputView.getKeyboard();
if (current == mSymbolsKeyboard || current == mSymbolsShiftedKeyboard) {
current = mQwertyKeyboard;
setLatinKeyboard(mQwertyKeyboard);
} else {
current = mSymbolsKeyboard;
}
mInputView.setKeyboard(current);
if (current == mSymbolsKeyboard) {
current.setShifted(false);
setLatinKeyboard(mSymbolsKeyboard);
mSymbolsKeyboard.setShifted(false);
}
} else {
handleCharacter(primaryCode, keyCodes);
@@ -597,11 +607,11 @@ public class SoftKeyboard extends InputMethodService
mInputView.setShifted(mCapsLock || !mInputView.isShifted());
} else if (currentKeyboard == mSymbolsKeyboard) {
mSymbolsKeyboard.setShifted(true);
mInputView.setKeyboard(mSymbolsShiftedKeyboard);
setLatinKeyboard(mSymbolsShiftedKeyboard);
mSymbolsShiftedKeyboard.setShifted(true);
} else if (currentKeyboard == mSymbolsShiftedKeyboard) {
mSymbolsShiftedKeyboard.setShifted(false);
mInputView.setKeyboard(mSymbolsKeyboard);
setLatinKeyboard(mSymbolsKeyboard);
mSymbolsKeyboard.setShifted(false);
}
}
@@ -629,6 +639,22 @@ public class SoftKeyboard extends InputMethodService
mInputView.closing();
}
private IBinder getToken() {
final Dialog dialog = getWindow();
if (dialog == null) {
return null;
}
final Window window = dialog.getWindow();
if (window == null) {
return null;
}
return window.getAttributes().token;
}
private void handleLanguageSwitch() {
mInputMethodManager.switchToNextInputMethod(getToken(), false /* onlyCurrentIme */);
}
private void checkToggleCapsLock() {
long now = System.currentTimeMillis();
if (mLastShiftTime + 800 > now) {