From 1c6eb70f0640269304041982f7514df92b047776 Mon Sep 17 00:00:00 2001
From: "David A. Madore" <david+git@madore.org>
Date: Sat, 1 May 2010 23:14:07 +0200
Subject: New feature: decode Unicode character string.

---
 res/layout/decode_dialog.xml                       | 25 ++++++
 res/menu/options_menu.xml                          |  2 +
 res/values/strings.xml                             |  5 ++
 .../android/unicodeMap/UnicodeArrayAdapter.java    |  5 +-
 .../android/unicodeMap/UnicodeCharacter.java       | 21 ++++-
 .../android/unicodeMap/UnicodeMapActivity.java     | 90 ++++++++++++++++++++++
 6 files changed, 146 insertions(+), 2 deletions(-)
 create mode 100644 res/layout/decode_dialog.xml

diff --git a/res/layout/decode_dialog.xml b/res/layout/decode_dialog.xml
new file mode 100644
index 0000000..0cb1f20
--- /dev/null
+++ b/res/layout/decode_dialog.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    android:padding="10dp"
+    android:orientation="vertical">
+  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+      android:layout_width="fill_parent"
+      android:layout_height="wrap_content"
+      android:orientation="horizontal">
+    <EditText android:id="@+id/decodeString"
+        android:layout_width="0dip"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:maxLength="1000" />
+    <Button android:id="@+id/decodeButton"
+        android:layout_width="wrap_content"
+        android:layout_height="fill_parent"
+        android:text="@string/decode_button" />
+  </LinearLayout>
+  <TextView
+      android:layout_width="fill_parent"
+      android:layout_height="wrap_content"
+      android:text="@string/decode_hint" />
+</LinearLayout>
diff --git a/res/menu/options_menu.xml b/res/menu/options_menu.xml
index d101b1f..34671d0 100644
--- a/res/menu/options_menu.xml
+++ b/res/menu/options_menu.xml
@@ -4,6 +4,8 @@
       android:title="@string/menu_go" />
   <item android:id="@+id/menuSearch"
       android:title="@string/menu_search" />
+  <item android:id="@+id/menuDecode"
+      android:title="@string/menu_decode" />
   <item android:id="@+id/menuAbout"
       android:title="@string/menu_about" />
 </menu>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 6efe70c..9dd3d63 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -22,6 +22,11 @@
     be searched</string>
     <string name="search_results">search results</string>
     <string name="list_too_long">Only %d first results shown</string>
+    <string name="menu_decode">Decode</string>
+    <string name="decode_title">Decode string</string>
+    <string name="decode_button">Decode</string>
+    <string name="decode_hint">Paste Unicode characters here to see
+    their names</string>
     <string name="menu_about">About</string>
     <string name="about_title">About Unicode Map</string>
     <string name="about_text">Unicode Map version 0.0.2\nby David
diff --git a/src/org/madore/android/unicodeMap/UnicodeArrayAdapter.java b/src/org/madore/android/unicodeMap/UnicodeArrayAdapter.java
index ecf7348..eb3f794 100644
--- a/src/org/madore/android/unicodeMap/UnicodeArrayAdapter.java
+++ b/src/org/madore/android/unicodeMap/UnicodeArrayAdapter.java
@@ -47,7 +47,10 @@ public class UnicodeArrayAdapter
 		charTextView = view.findViewById(R.id.charText);
 		labelTextView = view.findViewById(R.id.labelText);
 	    }
-	    ((TextView)charTextView).setText(((UnicodeCharacter)item).getChar());
+	    if ( ((UnicodeCharacter)item).isPrintable() )
+		((TextView)charTextView).setText(((UnicodeCharacter)item).getChar());
+	    else
+		((TextView)charTextView).setText("");
 	    ((TextView)labelTextView).setText(((UnicodeCharacter)item).getLabel());
 	} else if ( item instanceof UnicodeRangeable ) {
 	    if ( convertView != null
diff --git a/src/org/madore/android/unicodeMap/UnicodeCharacter.java b/src/org/madore/android/unicodeMap/UnicodeCharacter.java
index 42e449a..5d53ccb 100644
--- a/src/org/madore/android/unicodeMap/UnicodeCharacter.java
+++ b/src/org/madore/android/unicodeMap/UnicodeCharacter.java
@@ -222,6 +222,9 @@ public class UnicodeCharacter implements UnicodeDisplayable {
 	public int getTo() { return this.to; }
 	public String getDescr() { return this.descr; }
 	public String getTitle() { return this.descr; }
+	public boolean belongs(int codePoint) {
+	    return ( codePoint>=this.from && codePoint<this.to );
+	}
 	@Override
 	public String toString() { return this.descr; }
     }
@@ -389,6 +392,7 @@ public class UnicodeCharacter implements UnicodeDisplayable {
     protected final int codePoint;
     protected final String name;
     protected final Category category;
+    protected final boolean isUnicode;
     protected final String charStr;
     protected final String label;
 
@@ -407,6 +411,17 @@ public class UnicodeCharacter implements UnicodeDisplayable {
 	this.codePoint = codePoint;
 	this.name = name;
 	this.category = category;
+	this.isUnicode = true;
+	this.charStr = makeCharStr();
+	this.label = makeLabel();
+    }
+
+    public UnicodeCharacter(int codePoint, String name, Category category,
+			    boolean isUnicode) {
+	this.codePoint = codePoint;
+	this.name = name;
+	this.category = category;
+	this.isUnicode = isUnicode;
 	this.charStr = makeCharStr();
 	this.label = makeLabel();
     }
@@ -431,8 +446,12 @@ public class UnicodeCharacter implements UnicodeDisplayable {
 	return this.label;
     }
 
+    public boolean isUnicode() {
+	return this.isUnicode;
+    }
+
     public boolean isPrintable() {
-	return printable.contains(this.category);
+	return this.isUnicode && printable.contains(this.category);
     }
 
     @Override
diff --git a/src/org/madore/android/unicodeMap/UnicodeMapActivity.java b/src/org/madore/android/unicodeMap/UnicodeMapActivity.java
index 8e93e36..01f5fdb 100644
--- a/src/org/madore/android/unicodeMap/UnicodeMapActivity.java
+++ b/src/org/madore/android/unicodeMap/UnicodeMapActivity.java
@@ -75,6 +75,14 @@ public final class UnicodeMapActivity extends ListActivity {
 	public int getLimit() { return this.limit; }
 	public int getSizeHint() { return this.sizeHint; }
     }
+    protected static class DecodeDisplay extends Display {
+	protected String coded;
+	public DecodeDisplay(String title, String coded) {
+	    super(title);
+	    this.coded = coded;
+	}
+	public String getCoded() { return this.coded; }
+    }
 
     protected static class DisplayAndPosition {
 	protected Display disp;
@@ -227,6 +235,42 @@ public final class UnicodeMapActivity extends ListActivity {
 			       String.format(str, limit),
 			       Toast.LENGTH_SHORT).show();
 	    }
+	} else if ( disp instanceof DecodeDisplay ) {
+	    String coded = ((DecodeDisplay)disp).getCoded();
+	    list = new ArrayList<UnicodeDisplayable>(coded.length());
+	    for ( int i=0 ; i<coded.length() ; i++ ) {
+		int codePoint = coded.codePointAt(i);
+		if ( codePoint >= 0x10000 )
+		    i++;
+		UnicodeCharacter ch = db.getSingle(codePoint);
+		if ( ch == null ) {
+		    String name;  UnicodeCharacter.Category category;
+		    if ( codePoint < 0x0020 || ( codePoint >= 0x007f
+						 && codePoint < 0x00a0 ) ) {
+			name = String.format("<control-%04X>", codePoint);
+			category = UnicodeCharacter.Category.CONTROL;
+		    } else if ( UnicodeCharacter.Range.HIGH_SURROGATES.belongs(codePoint)
+				|| UnicodeCharacter.Range.HIGH_PRIVATE_USE_SURROGATES.belongs(codePoint)
+				|| UnicodeCharacter.Range.LOW_SURROGATES.belongs(codePoint) ) {
+			name = String.format("<surrogate-%04X>", codePoint);
+			category = UnicodeCharacter.Category.SURROGATE;
+		    } else if ( UnicodeCharacter.Range.PRIVATE_USE_AREA.belongs(codePoint)
+				|| UnicodeCharacter.Range.SUPPLEMENTARY_PRIVATE_USE_AREA_A.belongs(codePoint)
+				|| UnicodeCharacter.Range.SUPPLEMENTARY_PRIVATE_USE_AREA_B.belongs(codePoint) ) {
+			name = String.format("<private-use-%04X>", codePoint);
+			category = UnicodeCharacter.Category.PRIVATE_USE;
+		    } else {
+			name = String.format("<noncharacter-%04X>", codePoint);
+			category = UnicodeCharacter.Category.UNASSIGNED;
+		    }
+		    ch = new UnicodeCharacter(codePoint, name, category,
+					      false);
+		}
+		list.add(ch);
+	    }
+	    disp.setListCache(list);
+	    adapter = new UnicodeArrayAdapter(this, list);
+	    setListAdapter(adapter);
 	} else
 	    throw new AssertionError("unknown UnicodeMapActivity.Display");
 	String title = disp.getTitle();
@@ -499,6 +543,49 @@ public final class UnicodeMapActivity extends ListActivity {
 	dialog.show();
     }
 
+    protected void doDecode(String s) {
+	Display newDisp = new DecodeDisplay(s, s);
+	saveDisplay();
+	doDisplay(newDisp, true);
+    }
+
+    protected void queryDecode() {
+	final Dialog dialog = new Dialog(UnicodeMapActivity.this);
+	// dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
+	dialog.setTitle(R.string.decode_title);
+	dialog.setOwnerActivity(this);
+	dialog.setContentView(R.layout.decode_dialog);
+	dialog.setCancelable(true);
+	dialog.getWindow().setLayout(ViewGroup.LayoutParams.FILL_PARENT,
+				     ViewGroup.LayoutParams.WRAP_CONTENT);
+	final EditText textForm
+	    = (EditText) dialog.findViewById(R.id.decodeString);
+	textForm.setOnKeyListener(new View.OnKeyListener() {
+		public boolean onKey(View view, int keyCode, KeyEvent event) {
+		    if ( ( event.getAction() == KeyEvent.ACTION_DOWN )
+			 && ( keyCode == KeyEvent.KEYCODE_ENTER ) ) {
+			String s = textForm.getText().toString();
+			if ( ! Pattern.matches("^\\s*$", s) ) {
+			    doDecode(s);
+			    dialog.dismiss();
+			}
+			return true;
+		    }
+		    return false;
+		}
+	    });
+	final Button btn = (Button) dialog.findViewById(R.id.decodeButton);
+	btn.setOnClickListener(new View.OnClickListener() {
+		public void onClick(View view) {
+		    String s = textForm.getText().toString();
+		    if ( ! Pattern.matches("^\\s*$", s) )
+			doDecode(s);
+		    dialog.dismiss();
+		}
+	    });
+	dialog.show();
+    }
+
     protected void displayAbout() {
 	final Dialog dialog = new Dialog(UnicodeMapActivity.this);
 	dialog.setTitle(R.string.about_title);
@@ -548,6 +635,9 @@ public final class UnicodeMapActivity extends ListActivity {
 	case R.id.menuSearch:
 	    querySearch();
 	    return true;
+	case R.id.menuDecode:
+	    queryDecode();
+	    return true;
 	case R.id.menuAbout:
 	    displayAbout();
 	    return true;
-- 
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