allow clicking on breadcrumb items

app/src/main/java/com/simplemobiletools/filemanager/Breadcrumbs.java

@@ -10,9 +10,10 @@ import android.view.WindowManager;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
-public class Breadcrumbs extends LinearLayout {
+public class Breadcrumbs extends LinearLayout implements View.OnClickListener {
     private LayoutInflater mInflater;
     private int mDeviceWidth;
+    private BreadcrumbsListener mListener;
 
     public Breadcrumbs(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -27,15 +28,20 @@ public class Breadcrumbs extends LinearLayout {
         mDeviceWidth = deviceDisplay.x;
     }
 
+    public void setListener(BreadcrumbsListener listener) {
+        mListener = listener;
+    }
+
     @Override
     protected void onLayout(boolean changed, int l, int t, int r, int b) {
         final int paddingTop = getPaddingTop();
         final int paddingLeft = getPaddingLeft();
-        final int childRight = getMeasuredWidth() - getPaddingRight();
+        final int paddingRight = getPaddingRight();
+        final int childRight = getMeasuredWidth() - paddingRight;
         final int childBottom = getMeasuredHeight() - getPaddingBottom();
         final int childHeight = childBottom - paddingTop;
 
-        final int usableWidth = mDeviceWidth - paddingLeft - getPaddingRight();
+        final int usableWidth = mDeviceWidth - paddingLeft - paddingRight;
         int maxHeight = 0;
         int curWidth;
         int curHeight;
@@ -91,17 +97,30 @@ public class Breadcrumbs extends LinearLayout {
     }
 
     public void setInitialBreadcrumb() {
-        addBreadcrumb("home");
+        addBreadcrumb(getResources().getString(R.string.initial_breadcrumb));
     }
 
     public void addBreadcrumb(String text) {
         final View view = mInflater.inflate(R.layout.breadcrumb_item, null, false);
+        view.setTag(getChildCount());
         final TextView textView = (TextView) view.findViewById(R.id.breadcrumb_text);
         textView.setText(text);
         addView(view);
+        view.setOnClickListener(this);
     }
 
     public void removeBreadcrumb() {
         removeView(getChildAt(getChildCount() - 1));
     }
+
+    @Override
+    public void onClick(View v) {
+        if (mListener != null) {
+            mListener.breadcrumbClicked((Integer) v.getTag());
+        }
+    }
+
+    public interface BreadcrumbsListener {
+        void breadcrumbClicked(int id);
+    }
 }

app/src/main/java/com/simplemobiletools/filemanager/activities/MainActivity.java

@@ -21,7 +21,7 @@ import com.simplemobiletools.filemanager.models.FileDirItem;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 
-public class MainActivity extends AppCompatActivity implements ItemsFragment.ItemInteractionListener {
+public class MainActivity extends AppCompatActivity implements ItemsFragment.ItemInteractionListener, Breadcrumbs.BreadcrumbsListener {
     @BindView(R.id.breadcrumbs) Breadcrumbs mBreadcrumbs;
 
     private static final int STORAGE_PERMISSION = 1;
@@ -31,6 +31,7 @@ public class MainActivity extends AppCompatActivity implements ItemsFragment.Ite
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         ButterKnife.bind(this);
+        mBreadcrumbs.setListener(this);
         tryInitFileManager();
     }
 
@@ -112,4 +113,14 @@ public class MainActivity extends AppCompatActivity implements ItemsFragment.Ite
         openPath(item.getPath());
         mBreadcrumbs.addBreadcrumb(" -> " + item.getName());
     }
+
+    @Override
+    public void breadcrumbClicked(int id) {
+        final int children = mBreadcrumbs.getChildCount() - 1;
+        final int removeCnt = children - id;
+        for (int i = 0; i < removeCnt; i++) {
+            getSupportFragmentManager().popBackStack();
+            mBreadcrumbs.removeBreadcrumb();
+        }
+    }
 }

app/src/main/res/values/strings.xml

@@ -23,6 +23,7 @@
     <string name="invalid_destination">Could not write to the selected destination</string>
     <string name="copy_failed">Could not copy the files</string>
     <string name="copying">Copying</string>
+    <string name="initial_breadcrumb">home</string>
 
     <plurals name="items_deleted">
         <item quantity="one">1 item deleted</item>