add Rename to available bottom actions

app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt

@@ -293,6 +293,7 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
             findItem(R.id.menu_delete).isVisible = visibleBottomActions and BOTTOM_ACTION_DELETE == 0
             findItem(R.id.menu_share).isVisible = visibleBottomActions and BOTTOM_ACTION_SHARE == 0
             findItem(R.id.menu_edit).isVisible = visibleBottomActions and BOTTOM_ACTION_EDIT == 0
+            findItem(R.id.menu_rename).isVisible = visibleBottomActions and BOTTOM_ACTION_RENAME == 0
             findItem(R.id.menu_rotate).isVisible = currentMedium.isImage() && visibleBottomActions and BOTTOM_ACTION_ROTATE == 0
             findItem(R.id.menu_save_as).isVisible = mRotationDegrees != 0
             findItem(R.id.menu_hide).isVisible = !currentMedium.isHidden() && visibleBottomActions and BOTTOM_ACTION_TOGGLE_VISIBILITY == 0
@@ -852,6 +853,13 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
                 }
             }
         }
+
+        bottom_rename.beVisibleIf(visibleBottomActions and BOTTOM_ACTION_RENAME != 0)
+        bottom_rename.setOnClickListener {
+            if (bottom_actions.alpha == 1f) {
+                renameFile()
+            }
+        }
     }
 
     private fun updateBottomActionIcons(medium: Medium) {

app/src/main/kotlin/com/simplemobiletools/gallery/dialogs/ManageBottomActionsDialog.kt

@@ -24,6 +24,7 @@ class ManageBottomActionsDialog(val activity: BaseSimpleActivity, val callback:
             manage_bottom_actions_slideshow.isChecked = actions and BOTTOM_ACTION_PROPERTIES != 0
             manage_bottom_actions_show_on_map.isChecked = actions and BOTTOM_ACTION_SHOW_ON_MAP != 0
             manage_bottom_actions_toggle_visibility.isChecked = actions and BOTTOM_ACTION_TOGGLE_VISIBILITY != 0
+            manage_bottom_actions_rename.isChecked = actions and BOTTOM_ACTION_RENAME != 0
         }
 
         AlertDialog.Builder(activity)
@@ -57,6 +58,8 @@ class ManageBottomActionsDialog(val activity: BaseSimpleActivity, val callback:
                 result += BOTTOM_ACTION_SHOW_ON_MAP
             if (manage_bottom_actions_toggle_visibility.isChecked)
                 result += BOTTOM_ACTION_TOGGLE_VISIBILITY
+            if (manage_bottom_actions_rename.isChecked)
+                result += BOTTOM_ACTION_RENAME
         }
 
         activity.config.visibleBottomActions = result

app/src/main/kotlin/com/simplemobiletools/gallery/helpers/Constants.kt

@@ -146,5 +146,6 @@ const val BOTTOM_ACTION_LOCK_ORIENTATION = 64
 const val BOTTOM_ACTION_SLIDESHOW = 128
 const val BOTTOM_ACTION_SHOW_ON_MAP = 256
 const val BOTTOM_ACTION_TOGGLE_VISIBILITY = 512
+const val BOTTOM_ACTION_RENAME = 1024
 
 const val DEFAULT_BOTTOM_ACTIONS = BOTTOM_ACTION_TOGGLE_FAVORITE or BOTTOM_ACTION_EDIT or BOTTOM_ACTION_SHARE or BOTTOM_ACTION_DELETE

app/src/main/res/layout/bottom_actions.xml

@@ -115,8 +115,19 @@
         android:layout_height="wrap_content"
         android:padding="@dimen/medium_margin"
         android:src="@drawable/ic_hide"
-        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/bottom_rename"
         app:layout_constraintHorizontal_bias="0.5"
         app:layout_constraintStart_toEndOf="@+id/bottom_show_on_map"/>
 
+    <ImageView
+        android:id="@+id/bottom_rename"
+        style="@style/MyBorderlessBackgroundStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:padding="@dimen/medium_margin"
+        android:src="@drawable/ic_rename_new"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toEndOf="@+id/bottom_toggle_file_visibility"/>
+
 </android.support.constraint.ConstraintLayout>

app/src/main/res/layout/dialog_manage_bottom_actions.xml

@@ -94,5 +94,13 @@
             android:paddingTop="@dimen/activity_margin"
             android:text="@string/toggle_file_visibility"/>
 
+        <com.simplemobiletools.commons.views.MyAppCompatCheckbox
+            android:id="@+id/manage_bottom_actions_rename"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:paddingBottom="@dimen/activity_margin"
+            android:paddingTop="@dimen/activity_margin"
+            android:text="@string/rename"/>
+
     </LinearLayout>
 </ScrollView>