add: docs searching backward support

app/src/main/java/com/stardust/scriptdroid/ui/doc/DocsFragment.java

@@ -101,12 +101,16 @@ public class DocsFragment extends ViewPagerFragment implements BackPressedHandle
             mPreviousQuery = null;
             return;
         }
-        if (event.getQuery().equals(mPreviousQuery)) {
+        if (event.isFindForward()) {
             mWebView.findNext(false);
-        } else {
-            mWebView.findAllAsync(event.getQuery());
-            mPreviousQuery = event.getQuery();
+            return;
         }
+        if (event.getQuery().equals(mPreviousQuery)) {
+            mWebView.findNext(true);
+            return;
+        }
+        mWebView.findAllAsync(event.getQuery());
+        mPreviousQuery = event.getQuery();
     }
 
     @Override

app/src/main/java/com/stardust/scriptdroid/ui/main/MainActivity.java

@@ -73,6 +73,8 @@ public class MainActivity extends BaseActivity implements OnActivityResultDelega
     private VersionGuard mVersionGuard;
     private BackPressedHandler.Observer mBackPressObserver = new BackPressedHandler.Observer();
     private SearchViewItem mSearchViewItem;
+    private MenuItem mLogMenuItem;
+    private boolean mDocsSearchItemExpanded;
 
 
     @Override
@@ -254,6 +256,7 @@ public class MainActivity extends BaseActivity implements OnActivityResultDelega
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.menu_main, menu);
         MenuItem searchMenuItem = menu.findItem(R.id.action_search);
+        mLogMenuItem = menu.findItem(R.id.action_log);
         setUpSearchMenuItem(searchMenuItem);
         return true;
     }
@@ -261,14 +264,37 @@ public class MainActivity extends BaseActivity implements OnActivityResultDelega
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         if (item.getItemId() == R.id.action_log) {
-            LogActivity_.intent(this).start();
+            if (mDocsSearchItemExpanded) {
+                submitForwardQuery();
+            } else {
+                LogActivity_.intent(this).start();
+            }
             return true;
         }
         return super.onOptionsItemSelected(item);
     }
 
+
     private void setUpSearchMenuItem(MenuItem searchMenuItem) {
-        mSearchViewItem = new SearchViewItem(this, searchMenuItem);
+        mSearchViewItem = new SearchViewItem(this, searchMenuItem) {
+            @Override
+            public boolean onMenuItemActionExpand(MenuItem item) {
+                if (mViewPager.getCurrentItem() == 1) {
+                    mDocsSearchItemExpanded = true;
+                    mLogMenuItem.setIcon(R.drawable.ic_ali_up);
+                }
+                return super.onMenuItemActionExpand(item);
+            }
+
+            @Override
+            public boolean onMenuItemActionCollapse(MenuItem item) {
+                if (mDocsSearchItemExpanded) {
+                    mDocsSearchItemExpanded = false;
+                    mLogMenuItem.setIcon(R.drawable.ic_ali_log);
+                }
+                return super.onMenuItemActionCollapse(item);
+            }
+        };
         mSearchViewItem.setQueryCallback(this::submitQuery);
     }
 
@@ -284,4 +310,10 @@ public class MainActivity extends BaseActivity implements OnActivityResultDelega
         }
     }
 
+    private void submitForwardQuery() {
+        QueryEvent event = QueryEvent.FIND_FORWARD;
+        EventBus.getDefault().post(event);
+    }
+
+
 }

app/src/main/java/com/stardust/scriptdroid/ui/main/QueryEvent.java

@@ -7,12 +7,19 @@ package com.stardust.scriptdroid.ui.main;
 public class QueryEvent {
 
     public static final QueryEvent CLEAR = new QueryEvent(null);
+    public static final QueryEvent FIND_FORWARD = new QueryEvent("", true);
 
     private boolean mShouldCollapseSearchView = false;
     private final String mQuery;
+    private final boolean mFindForward;
+
+    public QueryEvent(String query, boolean b) {
+        mQuery = query;
+        mFindForward = b;
+    }
 
     public QueryEvent(String query) {
-        mQuery = query;
+        this(query, false);
     }
 
     public String getQuery() {
@@ -26,5 +33,9 @@ public class QueryEvent {
     public boolean shouldCollapseSearchView() {
         return mShouldCollapseSearchView;
     }
+
+    public boolean isFindForward() {
+        return mFindForward;
+    }
 }