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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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60
samples/SoftKeyboard/src/com/example/android/softkeyboard/LatinKeyboard.java
View File

@@ -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);
}