1 files changed, 88 insertions, 0 deletions
diff --git a/src/com/android/inputmethod/pinyin/SkbPool.java b/src/com/android/inputmethod/pinyin/SkbPool.java
new file mode 100644
index 0000000..4c46951
--- /dev/null
+++ b/src/com/android/inputmethod/pinyin/SkbPool.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2009 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 com.android.inputmethod.pinyin;
+
+import java.util.Vector;
+
+import android.content.Context;
+
+/**
+ * Class used to cache previously loaded soft keyboard layouts.
+ */
+public class SkbPool {
+    private static SkbPool mInstance = null;
+
+    private Vector<SkbTemplate> mSkbTemplates = new Vector<SkbTemplate>();
+    private Vector<SoftKeyboard> mSoftKeyboards = new Vector<SoftKeyboard>();
+
+    private SkbPool() {
+    }
+
+    public static SkbPool getInstance() {
+        if (null == mInstance) mInstance = new SkbPool();
+        return mInstance;
+    }
+
+    public void resetCachedSkb() {
+        mSoftKeyboards.clear();
+    }
+
+    public SkbTemplate getSkbTemplate(int skbTemplateId, Context context) {
+        for (int i = 0; i < mSkbTemplates.size(); i++) {
+            SkbTemplate t = mSkbTemplates.elementAt(i);
+            if (t.getSkbTemplateId() == skbTemplateId) {
+                return t;
+            }
+        }
+
+        if (null != context) {
+            XmlKeyboardLoader xkbl = new XmlKeyboardLoader(context);
+            SkbTemplate t = xkbl.loadSkbTemplate(skbTemplateId);
+            if (null != t) {
+                mSkbTemplates.add(t);
+                return t;
+            }
+        }
+        return null;
+    }
+
+    // Try to find the keyboard in the pool with the cache id. If there is no
+    // keyboard found, try to load it with the given xml id.
+    public SoftKeyboard getSoftKeyboard(int skbCacheId, int skbXmlId,
+            int skbWidth, int skbHeight, Context context) {
+        for (int i = 0; i < mSoftKeyboards.size(); i++) {
+            SoftKeyboard skb = mSoftKeyboards.elementAt(i);
+            if (skb.getCacheId() == skbCacheId && skb.getSkbXmlId() == skbXmlId) {
+                skb.setSkbCoreSize(skbWidth, skbHeight);
+                skb.setNewlyLoadedFlag(false);
+                return skb;
+            }
+        }
+        if (null != context) {
+            XmlKeyboardLoader xkbl = new XmlKeyboardLoader(context);
+            SoftKeyboard skb = xkbl.loadKeyboard(skbXmlId, skbWidth, skbHeight);
+            if (skb != null) {
+                if (skb.getCacheFlag()) {
+                    skb.setCacheId(skbCacheId);
+                    mSoftKeyboards.add(skb);
+                }
+            }
+            return skb;
+        }
+        return null;
+    }
+}