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Add two convenient utility methods for L new API 

This CL adds two convenient utility methods for
InputConnection#requestCursorAnchorInfo to encapsulate
a bit complicated parameter construction.

BUG: 16382260
Change-Id: Ib11e3bd15a4edcb602c08ff830b2fb7b34ec00da
main
Yohei Yukawa 2014-07-19 23:42:37 +09:00
parent de1ab73efb
commit 5696ac95ac
1 changed files with 70 additions and 6 deletions
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76
java/src/com/android/inputmethod/compat/InputConnectionCompatUtils.java
View File

@ -16,12 +16,15 @@
package com.android.inputmethod.compat;
import android.util.Log;
import android.view.inputmethod.InputConnection;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
public final class InputConnectionCompatUtils {
private static final String TAG = InputConnectionCompatUtils.class.getSimpleName();
// Note that CursorAnchorInfoRequest is supposed to be available in API level 21 and later.
private static Class<?> getCursorAnchorInfoRequestClass() {
try {
@ -48,23 +51,84 @@ public final class InputConnectionCompatUtils {
}
/**
* A local copy of CursorAnchorInfoRequest.RESULT_NOT_HANDLED until the SDK becomes publicly
* Local copies of some constants in CursorAnchorInfoRequest until the SDK becomes publicly
* available.
*/
private final static int CURSOR_ANCHOR_INFO_REQUEST_RESULT_NOT_HANDLED = 0;
private final static int RESULT_NOT_HANDLED = 0;
private final static int RESULT_SCHEDULED = 1;
private final static int TYPE_CURSOR_ANCHOR_INFO = 1;
private final static int FLAG_CURSOR_ANCHOR_INFO_MONITOR = 1;
private final static int FLAG_CURSOR_ANCHOR_INFO_IMMEDIATE = 2;
private final static int TYPE_CURSOR_RECT = 2;
private final static int FLAG_CURSOR_RECT_MONITOR = 1;
private final static int FLAG_CURSOR_RECT_IN_SCREEN_COORDINATES = 2;
private final static int FLAG_CURSOR_RECT_WITH_VIEW_MATRIX = 4;
public static int requestCursorAnchorInfo(final InputConnection inputConnection,
private static int requestCursorAnchorInfoImpl(final InputConnection inputConnection,
final int type, final int flags) {
if (!isRequestCursorAnchorInfoAvailable()) {
return CURSOR_ANCHOR_INFO_REQUEST_RESULT_NOT_HANDLED;
return RESULT_NOT_HANDLED;
}
final Object requestObject = CompatUtils.newInstance(
CONSTRUCTOR_CursorAnchorInfoRequest, type, flags);
if (requestObject == null) {
return CURSOR_ANCHOR_INFO_REQUEST_RESULT_NOT_HANDLED;
return RESULT_NOT_HANDLED;
}
return (Integer) CompatUtils.invoke(inputConnection,
CURSOR_ANCHOR_INFO_REQUEST_RESULT_NOT_HANDLED /* defaultValue */,
RESULT_NOT_HANDLED /* defaultValue */,
METHOD_requestCursorAnchorInfo, requestObject);
}
/**
* Requests the editor to call back {@link InputMethodManager#updateCursorAnchorInfo}.
* @param inputConnection the input connection to which the request is to be sent.
* @param enableMonitor {@code true} to request the editor to call back the method whenever the
* cursor/anchor position is changed.
* @param requestImmediateCallback {@code true} to request the editor to call back the method
* as soon as possible to notify the current cursor/anchor position to the input method.
* @return {@code false} if the request is not handled. Otherwise returns {@code true}.
*/
public static boolean requestCursorAnchorInfo(final InputConnection inputConnection,
final boolean enableMonitor, final boolean requestImmediateCallback) {
final int requestFlags = (enableMonitor ? FLAG_CURSOR_ANCHOR_INFO_MONITOR : 0)
| (requestImmediateCallback ? FLAG_CURSOR_ANCHOR_INFO_IMMEDIATE : 0);
final int requestResult = requestCursorAnchorInfoImpl(inputConnection,
TYPE_CURSOR_ANCHOR_INFO, requestFlags);
switch (requestResult) {
case RESULT_NOT_HANDLED:
return false;
case RESULT_SCHEDULED:
return true;
default:
Log.w(TAG, "requestCursorAnchorInfo returned unknown result=" + requestResult
+ " for type=TYPE_CURSOR_ANCHOR_INFO flags=" + requestFlags);
return true;
}
}
/**
* Requests the editor to call back {@link InputMethodManager#updateCursor}.
* @param inputConnection the input connection to which the request is to be sent.
* @param enableMonitor {@code true} to request the editor to call back the method whenever the
* cursor position is changed.
* @return {@code false} if the request is not handled. Otherwise returns {@code true}.
*/
public static boolean requestCursorRect(final InputConnection inputConnection,
final boolean enableMonitor) {
final int requestFlags = enableMonitor ?
FLAG_CURSOR_RECT_MONITOR | FLAG_CURSOR_RECT_IN_SCREEN_COORDINATES |
FLAG_CURSOR_RECT_WITH_VIEW_MATRIX : 0;
final int requestResult = requestCursorAnchorInfoImpl(inputConnection, TYPE_CURSOR_RECT,
requestFlags);
switch (requestResult) {
case RESULT_NOT_HANDLED:
return false;
case RESULT_SCHEDULED:
return true;
default:
Log.w(TAG, "requestCursorAnchorInfo returned unknown result=" + requestResult
+ " for type=TYPE_CURSOR_RECT flags=" + requestFlags);
return true;
}
}
}