1 files changed, 93 insertions, 0 deletions
diff --git a/java/src/org/kelar/inputmethod/latin/utils/ViewLayoutUtils.java b/java/src/org/kelar/inputmethod/latin/utils/ViewLayoutUtils.java
new file mode 100644
index 000000000..3940375bb
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/latin/utils/ViewLayoutUtils.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.kelar.inputmethod.latin.utils;
+
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewGroup.MarginLayoutParams;
+import android.view.Window;
+import android.view.WindowManager;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+import android.widget.RelativeLayout;
+
+public final class ViewLayoutUtils {
+    private ViewLayoutUtils() {
+        // This utility class is not publicly instantiable.
+    }
+
+    public static MarginLayoutParams newLayoutParam(final ViewGroup placer, final int width,
+            final int height) {
+        if (placer instanceof FrameLayout) {
+            return new FrameLayout.LayoutParams(width, height);
+        } else if (placer instanceof RelativeLayout) {
+            return new RelativeLayout.LayoutParams(width, height);
+        } else if (placer == null) {
+            throw new NullPointerException("placer is null");
+        } else {
+            throw new IllegalArgumentException("placer is neither FrameLayout nor RelativeLayout: "
+                    + placer.getClass().getName());
+        }
+    }
+
+    public static void placeViewAt(final View view, final int x, final int y, final int w,
+            final int h) {
+        final ViewGroup.LayoutParams lp = view.getLayoutParams();
+        if (lp instanceof MarginLayoutParams) {
+            final MarginLayoutParams marginLayoutParams = (MarginLayoutParams)lp;
+            marginLayoutParams.width = w;
+            marginLayoutParams.height = h;
+            marginLayoutParams.setMargins(x, y, 0, 0);
+        }
+    }
+
+    public static void updateLayoutHeightOf(final Window window, final int layoutHeight) {
+        final WindowManager.LayoutParams params = window.getAttributes();
+        if (params != null && params.height != layoutHeight) {
+            params.height = layoutHeight;
+            window.setAttributes(params);
+        }
+    }
+
+    public static void updateLayoutHeightOf(final View view, final int layoutHeight) {
+        final ViewGroup.LayoutParams params = view.getLayoutParams();
+        if (params != null && params.height != layoutHeight) {
+            params.height = layoutHeight;
+            view.setLayoutParams(params);
+        }
+    }
+
+    public static void updateLayoutGravityOf(final View view, final int layoutGravity) {
+        final ViewGroup.LayoutParams lp = view.getLayoutParams();
+        if (lp instanceof LinearLayout.LayoutParams) {
+            final LinearLayout.LayoutParams params = (LinearLayout.LayoutParams)lp;
+            if (params.gravity != layoutGravity) {
+                params.gravity = layoutGravity;
+                view.setLayoutParams(params);
+            }
+        } else if (lp instanceof FrameLayout.LayoutParams) {
+            final FrameLayout.LayoutParams params = (FrameLayout.LayoutParams)lp;
+            if (params.gravity != layoutGravity) {
+                params.gravity = layoutGravity;
+                view.setLayoutParams(params);
+            }
+        } else {
+            throw new IllegalArgumentException("Layout parameter doesn't have gravity: "
+                    + lp.getClass().getName());
+        }
+    }
+}