am 22ba22f3: Merge "Add two convenient utility methods for L new API" into lmp-dev (080eba65) · Commits · e / os / android_packages_inputmethods_LatinIME

java/src/com/android/inputmethod/compat/InputConnectionCompatUtils.java

+70 −6

Original line number	Original line	Diff line number	Diff line
	@@ -16,12 +16,15 @@

	package com.android.inputmethod.compat;		package com.android.inputmethod.compat;

			import android.util.Log;
	import android.view.inputmethod.InputConnection;		import android.view.inputmethod.InputConnection;

	import java.lang.reflect.Constructor;		import java.lang.reflect.Constructor;
	import java.lang.reflect.Method;		import java.lang.reflect.Method;

	public final class InputConnectionCompatUtils {		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.		// Note that CursorAnchorInfoRequest is supposed to be available in API level 21 and later.
	private static Class<?> getCursorAnchorInfoRequestClass() {		private static Class<?> getCursorAnchorInfoRequestClass() {
	try {		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.		* 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) {		final int type, final int flags) {
	if (!isRequestCursorAnchorInfoAvailable()) {		if (!isRequestCursorAnchorInfoAvailable()) {
	return CURSOR_ANCHOR_INFO_REQUEST_RESULT_NOT_HANDLED;		return RESULT_NOT_HANDLED;
	}		}
	final Object requestObject = CompatUtils.newInstance(		final Object requestObject = CompatUtils.newInstance(
	CONSTRUCTOR_CursorAnchorInfoRequest, type, flags);		CONSTRUCTOR_CursorAnchorInfoRequest, type, flags);
	if (requestObject == null) {		if (requestObject == null) {
	return CURSOR_ANCHOR_INFO_REQUEST_RESULT_NOT_HANDLED;		return RESULT_NOT_HANDLED;
	}		}
	return (Integer) CompatUtils.invoke(inputConnection,		return (Integer) CompatUtils.invoke(inputConnection,
	CURSOR_ANCHOR_INFO_REQUEST_RESULT_NOT_HANDLED /* defaultValue */,		RESULT_NOT_HANDLED /* defaultValue */,
	METHOD_requestCursorAnchorInfo, requestObject);		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;
			}
			}
	}		}