android: Add string searching + search toolbar

LOKit supports searching, but this was not implemented yet in the
Android GUI. This adds a bottom search toolbar where you can type
a search string + up/down search handles to search for the string
from the current cursor position.

Change-Id: Ia7461d2c6399c23201d2ea81f0b44c38533939a1
(cherry picked from commit 6636476c)

android/source/res/drawable/ic_search.xml

+<?xml version="1.0" encoding="utf-8"?>
+
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+    android:src="@drawable/ic_search_black_24dp"
+    android:tint="@color/toolbar_forgeround"/>
\ No newline at end of file

android/source/res/drawable/ic_search_direction_down.xml

+<?xml version="1.0" encoding="utf-8"?>
+
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+        android:src="@drawable/ic_search_direction_down_black_24dp"
+        android:tint="@color/toolbar_forgeround"/>
\ No newline at end of file

android/source/res/drawable/ic_search_direction_up.xml

+<?xml version="1.0" encoding="utf-8"?>
+
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+        android:src="@drawable/ic_search_direction_up_black_24dp"
+        android:tint="@color/toolbar_forgeround"/>
\ No newline at end of file

android/source/res/layout/toolbar_bottom.xml

@@ -130,6 +130,45 @@
                 android:layout_height="wrap_content"
                 android:layout_weight="1"
                 android:minHeight="50dip"/>
+
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:id="@+id/search_toolbar"
+            android:layout_width="fill_parent"
+            android:layout_height="fill_parent"
+            android:orientation="vertical">
+
+            <LinearLayout
+                android:layout_width="fill_parent"
+                android:layout_height="fill_parent"
+                android:orientation="horizontal">
+
+                <EditText
+                    android:id="@+id/search_string"
+                    android:layout_width="fill_parent"
+                    android:layout_height="fill_parent"
+                    android:layout_weight="0.2"/>
+
+                <ImageButton
+                    android:id="@+id/button_search_up"
+                    android:layout_width="fill_parent"
+                    android:layout_height="fill_parent"
+                    android:layout_weight="0.6"
+                    android:background="@drawable/image_button_background"
+                    android:padding="10dp"
+                    android:src="@drawable/ic_search_direction_down"/>
+
+                <ImageButton
+                    android:id="@+id/button_search_down"
+                    android:layout_width="fill_parent"
+                    android:layout_height="fill_parent"
+                    android:layout_weight="0.6"
+                    android:background="@drawable/image_button_background"
+                    android:padding="10dp"
+                    android:src="@drawable/ic_search_direction_up"/>
+            </LinearLayout>
         </LinearLayout>
     </LinearLayout>
 

android/source/res/menu/main.xml

@@ -19,6 +19,12 @@
             android:orderInCategory="100"
             app:showAsAction="always"/>
 
+        <item android:id="@+id/action_search"
+              android:title="@string/action_search"
+              android:icon="@drawable/ic_search"
+              android:orderInCategory="100"
+              app:showAsAction="always"/>
+
         <item android:id="@+id/action_save"
             android:title="@string/action_save"
             android:orderInCategory="100" />

android/source/res/values/strings.xml

@@ -65,6 +65,7 @@
     <string name="action_keyboard">Show keyboard</string>
     <string name="action_save">Save</string>
     <string name="action_fromat">Enable Format</string>
+    <string name="action_search">Search</string>
 
     <!-- Feedback messages -->
     <string name="message_saved">Save complete</string>

android/source/src/java/org/libreoffice/LibreOfficeMainActivity.java

@@ -9,6 +9,7 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.res.AssetFileDescriptor;
 import android.content.res.AssetManager;
+import android.graphics.RectF;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.os.Handler;
@@ -77,6 +78,7 @@ public class LibreOfficeMainActivity extends AppCompatActivity {
     private FormattingController mFormattingController;
     private ToolbarController mToolbarController;
     private FontController mFontController;
+    private SearchController mSearchController;
 
     public LibreOfficeMainActivity() {
         mAbout = new LOAbout(this, false);
@@ -127,6 +129,7 @@ public class LibreOfficeMainActivity extends AppCompatActivity {
         });
 
         mFontController = new FontController(this);
+        mSearchController = new SearchController(this);
 
         if (getIntent().getData() != null) {
             if (getIntent().getData().getScheme().equals(ContentResolver.SCHEME_CONTENT)) {
@@ -181,6 +184,10 @@ public class LibreOfficeMainActivity extends AppCompatActivity {
         mToolbarController.setupToolbars();
     }
 
+    public RectF getCurrentCursorPosition() {
+        return mDocumentOverlay.getCurrentCursorPosition();
+    }
+
     private boolean copyFileToTemp() {
         ContentResolver contentResolver = getContentResolver();
         FileChannel inputChannel = null;
@@ -430,6 +437,7 @@ public class LibreOfficeMainActivity extends AppCompatActivity {
             public void run() {
                 findViewById(R.id.toolbar_bottom).setVisibility(View.GONE);
                 findViewById(R.id.formatting_toolbar).setVisibility(View.GONE);
+                findViewById(R.id.search_toolbar).setVisibility(View.GONE);
             }
         });
     }
@@ -440,6 +448,7 @@ public class LibreOfficeMainActivity extends AppCompatActivity {
             public void run() {
                 showBottomToolbar();
                 findViewById(R.id.formatting_toolbar).setVisibility(View.VISIBLE);
+                findViewById(R.id.search_toolbar).setVisibility(View.GONE);
                 hideSoftKeyboardDirect();
             }
         });
@@ -455,6 +464,28 @@ public class LibreOfficeMainActivity extends AppCompatActivity {
         });
     }
 
+    public void showSearchToolbar() {
+        LOKitShell.getMainHandler().post(new Runnable() {
+            @Override
+            public void run() {
+                showBottomToolbar();
+                findViewById(R.id.formatting_toolbar).setVisibility(View.GONE);
+                findViewById(R.id.search_toolbar).setVisibility(View.VISIBLE);
+                hideSoftKeyboardDirect();
+            }
+        });
+    }
+
+    public void hideSearchToolbar() {
+        LOKitShell.getMainHandler().post(new Runnable() {
+            @Override
+            public void run() {
+                hideBottomToolbar();
+                findViewById(R.id.search_toolbar).setVisibility(View.GONE);
+            }
+        });
+    }
+
     public void showProgressSpinner() {
         findViewById(R.id.loadingPanel).setVisibility(View.VISIBLE);
     }

android/source/src/java/org/libreoffice/SearchController.java

+package org.libreoffice;
+
+import android.view.View;
+import android.widget.EditText;
+import android.widget.ImageButton;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+public class SearchController implements View.OnClickListener {
+    private LibreOfficeMainActivity mActivity;
+
+    private enum SearchDriection {
+        UP, DOWN
+    };
+
+    public SearchController(LibreOfficeMainActivity activity) {
+        mActivity = activity;
+
+        ((ImageButton) activity.findViewById(R.id.button_search_up)).setOnClickListener(this);
+        ((ImageButton) activity.findViewById(R.id.button_search_down)).setOnClickListener(this);
+    }
+
+    private void search(String searchString, SearchDriection direction, float x, float y) {
+        try {
+            JSONObject rootJson = new JSONObject();
+
+            addProperty(rootJson, "SearchItem.SearchString", "string", searchString);
+            addProperty(rootJson, "SearchItem.Backward", "boolean", direction == SearchDriection.DOWN ? "true" : "false");
+            addProperty(rootJson, "SearchItem.SearchStartPointX", "long", String.valueOf((long) UnitConverter.pixelToTwip(x, LOKitShell.getDpi())));
+            addProperty(rootJson, "SearchItem.SearchStartPointY", "long", String.valueOf((long) UnitConverter.pixelToTwip(y, LOKitShell.getDpi())));
+            addProperty(rootJson, "SearchItem.Command", "long", String.valueOf(0)); // search all == 1
+
+            LOKitShell.sendEvent(new LOEvent(LOEvent.UNO_COMMAND, ".uno:ExecuteSearch", rootJson.toString()));
+
+        } catch (JSONException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private void addProperty(JSONObject json, String parentValue, String type, String value) throws JSONException {
+        JSONObject child = new JSONObject();
+        child.put("type", type);
+        child.put("value", value);
+        json.put(parentValue, child);
+    }
+
+    @Override
+    public void onClick(View view) {
+        ImageButton button = (ImageButton) view;
+
+        SearchDriection direction = SearchDriection.DOWN;
+        switch(button.getId()) {
+            case R.id.button_search_down:
+                direction = SearchDriection.DOWN;
+                break;
+            case R.id.button_search_up:
+                direction = SearchDriection.UP;
+                break;
+            default:
+                break;
+        }
+
+        String searchText = ((EditText) mActivity.findViewById(R.id.search_string)).getText().toString();
+
+        float x = mActivity.getCurrentCursorPosition().centerX();
+        float y = mActivity.getCurrentCursorPosition().centerY();
+        search(searchText, direction, x, y);
+    }
+}

android/source/src/java/org/libreoffice/ToolbarController.java

@@ -126,6 +126,9 @@ public class ToolbarController implements Toolbar.OnMenuItemClickListener {
             case R.id.action_settings:
                 mContext.showSettings();
                 return true;
+            case R.id.action_search:
+                mContext.showSearchToolbar();
+                return true;
         }
         return false;
     }

android/source/src/java/org/libreoffice/UnitConverter.java

+package org.libreoffice;
+
+
+public class UnitConverter {
+    public static float twipToPixel(float input, float dpi) {
+        return input / 1440.0f * dpi;
+    }
+
+    public static float pixelToTwip(float input, float dpi) {
+        return (input / dpi) * 1440.0f;
+    }
+}

android/source/src/java/org/libreoffice/overlay/DocumentOverlay.java

@@ -205,6 +205,10 @@ public class DocumentOverlay {
             }
         });
     }
+
+    public RectF getCurrentCursorPosition() {
+        return mDocumentOverlayView.getCurrentCursorPosition();
+    }
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

android/source/src/java/org/libreoffice/overlay/DocumentOverlayView.java

@@ -384,6 +384,10 @@ public class DocumentOverlayView extends View implements View.OnTouchListener {
         }
         return null;
     }
+
+    public RectF getCurrentCursorPosition() {
+        return mCursor.mPosition;
+    }
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */