Initial Contributionandroid-1.0release-1.0cdma-import

1 files changed, 116 insertions, 0 deletions

diff --git a/src/com/android/im/app/Markup.java b/src/com/android/im/app/Markup.java
new file mode 100644
index 0000000..b4f07b0
--- /dev/null
+++ b/src/com/android/im/app/Markup.java
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2008 Esmertec AG.
+ * Copyright (C) 2008 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.im.app;
+
+import com.android.im.plugin.BrandingResourceIDs;
+
+import android.graphics.drawable.Drawable;
+import android.text.Spannable;
+import android.text.SpannableString;
+import android.text.style.ImageSpan;
+import android.text.util.Linkify;
+
+public class Markup {
+    private BrandingResources mRes;
+    private IntTrie mSmileys;
+
+    public Markup(BrandingResources res) {
+        mRes = res;
+        mSmileys = new IntTrie(
+                res.getStringArray(BrandingResourceIDs.STRING_ARRAY_SMILEY_TEXTS), res.getSmileyIcons());
+    }
+
+    public final CharSequence markup(CharSequence text) {
+        SpannableString result;
+
+        if (text instanceof SpannableString) {
+            result = (SpannableString) text;
+        } else {
+            result = new SpannableString(text);
+        }
+
+        Linkify.addLinks(result, Linkify.ALL);
+        applyEmoticons(result);
+
+        return result;
+    }
+
+    public final CharSequence applyEmoticons(CharSequence text) {
+        int offset = 0;
+        final int len = text.length();
+        SpannableString result = null;
+
+        while (offset < len) {
+            int index = offset;
+            IntTrie.Node n = mSmileys.getNode(text.charAt(index++));
+            int candidate = 0;
+            int lastMatchEnd = -1;
+
+            //  Search the trie until we stop matching
+            while (n != null) {
+                //  Record the value and position of the longest match
+                if (n.mValue != 0) {
+                    candidate = n.mValue;
+                    lastMatchEnd = index;
+                }
+
+                //  Let's not run off the end of the input
+                if (index >= len) {
+                    break;
+                }
+
+                n = n.getNode(text.charAt(index++));
+            }
+
+            //  If we matched a smiley, apply its image over the text
+            if (candidate != 0) {
+                //  Lazy-convert the result text to a SpannableString if we have to
+                if (result == null) {
+                    if (text instanceof SpannableString) {
+                        result = (SpannableString) text;
+                    } else {
+                        result = new SpannableString(text);
+                        text = result;
+                    }
+                }
+                Drawable smiley = mRes.getSmileyIcon(candidate);
+                smiley.setBounds(0, 0, smiley.getIntrinsicWidth(), smiley.getIntrinsicHeight());
+                result.setSpan(new ImageSpan(smiley),
+                    offset, lastMatchEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
+
+                candidate = 0;
+            }
+
+            //  if there was a match, start searching for the next one after it
+            //  if no match, start at the next character
+            if (lastMatchEnd != -1) {
+                offset = lastMatchEnd;
+                lastMatchEnd = -1;
+            } else {
+                offset++;
+            }
+        }
+
+        //  If there were no modifications, return the original string
+        if (result == null) {
+            return text;
+        }
+
+        return result;
+    }
+}