Use sheets to edit attribute values in UI Designer

.idea/jarRepositories.xml

@@ -41,5 +41,10 @@
       <option name="name" value="MavenLocal" />
       <option name="url" value="file:/$USER_HOME$/.m2/repository/" />
     </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenLocal" />
+      <option name="name" value="MavenLocal" />
+      <option name="url" value="file:/$USER_HOME$/.m2/repository" />
+    </remote-repository>
   </component>
 </project>

.idea/misc.xml

@@ -49,6 +49,7 @@
         <entry key="..\:/Projects/AndroidStudioProjects/AndroidIDE/app/src/main/res/layout/layout_attr_editor_sheet.xml" value="0.25" />
         <entry key="..\:/Projects/AndroidStudioProjects/AndroidIDE/app/src/main/res/layout/layout_attr_editor_sheet_item.xml" value="0.25" />
         <entry key="..\:/Projects/AndroidStudioProjects/AndroidIDE/app/src/main/res/layout/layout_attr_value_editor.xml" value="0.25" />
+        <entry key="..\:/Projects/AndroidStudioProjects/AndroidIDE/app/src/main/res/layout/layout_attr_value_editor_enum.xml" value="0.25" />
         <entry key="..\:/Projects/AndroidStudioProjects/AndroidIDE/app/src/main/res/layout/layout_code_editor.xml" value="0.20185185185185187" />
         <entry key="..\:/Projects/AndroidStudioProjects/AndroidIDE/app/src/main/res/layout/layout_completion_item.xml" value="0.23854166666666668" />
         <entry key="..\:/Projects/AndroidStudioProjects/AndroidIDE/app/src/main/res/layout/layout_crash_report.xml" value="0.25" />

app/build.gradle

@@ -1,4 +1,5 @@
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
 apply plugin: 'com.google.gms.google-services'
 apply plugin: 'com.google.firebase.crashlytics'
 
@@ -112,6 +113,10 @@ dependencies {
 	implementation 'com.google.firebase:firebase-analytics'
 	implementation 'com.google.firebase:firebase-crashlytics'
 	implementation 'com.google.firebase:firebase-messaging'
+
+    // Kotlin
+    implementation "androidx.core:core-ktx:1.7.0"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     
 	// Local projects here
 	implementation project(':treeview')

app/src/main/java/com/itsaky/androidide/adapters/AttrValueFormatTabAdapter.java

@@ -0,0 +1,128 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.itsaky.androidide.adapters;
+
+import android.text.TextUtils;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentStatePagerAdapter;
+
+import com.itsaky.androidide.fragments.attr.BaseValueEditorFragment;
+import com.itsaky.androidide.models.XMLAttribute;
+import com.itsaky.androidide.utils.Logger;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * Adapter for value format tabs of attribute editor in UI Designer.
+ *
+ * @author Akash Yadav
+ */
+@SuppressWarnings("deprecation")
+public class AttrValueFormatTabAdapter extends FragmentStatePagerAdapter {
+    
+    private static final Logger LOG = Logger.instance ("AttrValueEditorTabAdapter");
+    private final List<Fragment> mFragments = new ArrayList<> ();
+    private final List<String> mTitles = new ArrayList<> ();
+    private final XMLAttribute attribute;
+    
+    private final BaseValueEditorFragment.OnValueChangeListener changeListener;
+    
+    public AttrValueFormatTabAdapter (@NonNull FragmentManager manager, XMLAttribute attribute, BaseValueEditorFragment.OnValueChangeListener changeListener) {
+        super (manager);
+        Objects.requireNonNull (attribute);
+        
+        this.changeListener = changeListener;
+        this.attribute = attribute;
+    }
+    
+    public void addFragment (final Class<? extends BaseValueEditorFragment> fragment, String title) {
+        Objects.requireNonNull (fragment);
+        Objects.requireNonNull (title);
+        if (TextUtils.isEmpty (title.trim ())) {
+            throw new IllegalArgumentException ("Invalid tab title");
+        }
+        
+        mTitles.add (capitalize (title));
+        mFragments.add (createFragment (fragment, title));
+    }
+    
+    @NonNull
+    private String capitalize (String title) {
+        title = title.trim ();
+        
+        final var sb = new StringBuilder ();
+        for (int i = 0; i < title.length (); i++) {
+            var ch = title.charAt (i);
+            if (i == 0) {
+                ch = Character.toUpperCase (ch);
+            } else {
+                ch = Character.toLowerCase (ch);
+            }
+            
+            sb.append (ch);
+        }
+        
+        return sb.toString ();
+    }
+    
+    public String getTitle (int position) {
+        return mTitles.get (position);
+    }
+    
+    @NonNull
+    public Fragment createFragment (Class<? extends BaseValueEditorFragment> clazz, @NonNull final String name) {
+        try {
+            final var frag = clazz.newInstance ();
+            frag.setAttribute (attribute);
+            frag.setName (name);
+            frag.setOnValueChangeListener (this.changeListener);
+            
+            return frag;
+        } catch (Throwable th) {
+            LOG.error ("Unable to create value editor fragment", th);
+            throw new RuntimeException (th);
+        }
+    }
+    
+    public void removeAll () {
+        mFragments.clear ();
+        mTitles.clear ();
+    }
+    
+    @NonNull
+    @Override
+    public Fragment getItem (int position) {
+        return mFragments.get (position);
+    }
+    
+    @Override
+    public int getCount () {
+        return mFragments.size ();
+    }
+    
+    @Nullable
+    @Override
+    public CharSequence getPageTitle (int position) {
+        return mTitles.get (position);
+    }
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/BaseValueEditorFragment.java

@@ -0,0 +1,71 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+
+import com.itsaky.androidide.models.XMLAttribute;
+import com.itsaky.inflater.IAttribute;
+
+import java.util.Objects;
+
+/**
+ * Base class for value editor fragment.
+ *
+ * @author Akash Yadav
+ */
+public class BaseValueEditorFragment extends Fragment {
+    
+    protected OnValueChangeListener mValueChangeListener;
+    protected XMLAttribute attribute;
+    protected String name;
+    
+    public void setAttribute (XMLAttribute attribute) {
+        this.attribute = attribute;
+    }
+    
+    public void setName (String name) {
+        this.name = name;
+    }
+    
+    public void setOnValueChangeListener (OnValueChangeListener listener) {
+        this.mValueChangeListener = listener;
+    }
+    
+    protected void notifyValueChanged (@NonNull String newValue) {
+        Objects.requireNonNull (newValue);
+        
+        if (mValueChangeListener != null) {
+            mValueChangeListener.onValueChanged (this.attribute, newValue);
+        }
+    }
+    
+    /**
+     * Listener for listening for value change event.
+     */
+    public interface OnValueChangeListener {
+        /**
+         * Called when the value was changed.
+         *
+         * @param attribute The attribute whose value was changed.
+         * @param newValue  The new value for the editor.
+         */
+        void onValueChanged (IAttribute attribute, String newValue);
+    }
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/BooleanEditor.java

@@ -0,0 +1,24 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+/**
+ * @author Akash Yadav
+ */
+public class BooleanEditor extends BaseValueEditorFragment {
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/ColorEditor.java

@@ -0,0 +1,24 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+/**
+ * @author Akash Yadav
+ */
+public class ColorEditor extends BaseValueEditorFragment {
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/DimensionEditor.java

@@ -0,0 +1,24 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+/**
+ * @author Akash Yadav
+ */
+public class DimensionEditor extends BaseValueEditorFragment {
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/EnumEditor.java

@@ -0,0 +1,60 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.google.android.material.chip.Chip;
+
+import java.util.Objects;
+
+/**
+ * @author Akash Yadav
+ */
+public class EnumEditor extends FixedValueEditor {
+    
+    @Override
+    public void onViewCreated (@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated (view, savedInstanceState);
+        
+        Objects.requireNonNull (this.attribute);
+        Objects.requireNonNull (this.chipGroup);
+        
+        this.chipGroup.setSingleSelection (true);
+        
+        final var attr = this.attribute.getAttr ();
+        for (var value : attr.possibleValues) {
+            if (TextUtils.isEmpty (value)) {
+                continue;
+            }
+            
+            this.chipGroup.addView (newChip (value, value.equals (this.attribute.getValue ())));
+        }
+        
+        this.chipGroup.setOnCheckedChangeListener ((group, checkedId) -> {
+            final var chip = (Chip) group.findViewById (checkedId);
+            final var val = chip.getText ().toString ().trim ();
+            notifyValueChanged (val);
+        });
+    }
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/FixedValueEditor.java

@@ -0,0 +1,64 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.itsaky.androidide.fragments.attr;
+
+import android.content.res.ColorStateList;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.content.ContextCompat;
+
+import com.google.android.material.chip.Chip;
+import com.google.android.material.chip.ChipGroup;
+import com.itsaky.androidide.R;
+
+/**
+ * @author Akash Yadav
+ */
+public abstract class FixedValueEditor extends BaseValueEditorFragment {
+    
+    protected ChipGroup chipGroup;
+    
+    @Nullable
+    @Override
+    public View onCreateView (@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        this.chipGroup = new ChipGroup (inflater.getContext ());
+        this.chipGroup.setLayoutParams (new ViewGroup.LayoutParams (ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
+        this.chipGroup.setSelectionRequired (true);
+        this.chipGroup.setSingleSelection (false);
+        
+        return this.chipGroup;
+    }
+    
+    protected Chip newChip (String title, boolean checked) {
+        final var chip = new Chip (requireContext ());
+        chip.setText (title);
+        chip.setCheckedIcon (ContextCompat.getDrawable (requireContext (), R.drawable.ic_ok));
+        chip.setChecked (checked);
+        chip.setChipBackgroundColor (ContextCompat.getColorStateList (requireContext (), R.color.bg_enum_chips));
+        chip.setTextColor (ContextCompat.getColor (requireContext (), R.color.primaryTextColor));
+        chip.setLayoutParams (new ChipGroup.LayoutParams (ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
+        chip.setChipStrokeWidth (1f);
+        chip.setChipStrokeColor (ColorStateList.valueOf (ContextCompat.getColor (requireContext (), R.color.primaryDarkColor)));
+        
+        return chip;
+    }
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/FlagEditor.java

@@ -0,0 +1,24 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+/**
+ * @author Akash Yadav
+ */
+public class FlagEditor extends BaseValueEditorFragment {
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/FloatEditor.java

@@ -0,0 +1,24 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+/**
+ * @author Akash Yadav
+ */
+public class FloatEditor extends BaseValueEditorFragment {
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/FractionEditor.java

@@ -0,0 +1,24 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+/**
+ * @author Akash Yadav
+ */
+public class FractionEditor extends BaseValueEditorFragment {
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/IntegerEditor.java

@@ -0,0 +1,24 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+/**
+ * @author Akash Yadav
+ */
+public class IntegerEditor extends BaseValueEditorFragment {
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/ReferenceEditor.java

@@ -0,0 +1,24 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+/**
+ * @author Akash Yadav
+ */
+public class ReferenceEditor extends BaseValueEditorFragment {
+}

app/src/main/java/com/itsaky/androidide/fragments/attr/StringEditor.java

@@ -0,0 +1,24 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.fragments.attr;
+
+/**
+ * @author Akash Yadav
+ */
+public class StringEditor extends BaseValueEditorFragment {
+}

app/src/main/java/com/itsaky/androidide/fragments/sheets/AttrEditorSheet.java

@@ -75,6 +75,7 @@ public class AttrEditorSheet extends BottomSheetDialogFragment
     private static final List<IconTextListItem> VIEW_ACTIONS = new ArrayList<> ();
     private static final Logger LOG = Logger.instance ("AttrBottomSheet");
     private AttributeListSheet mAttrListSheet;
+    private AttrValueEditorSheet mValueEditorSheet;
     private IView selectedView;
     private File layout;
     private LayoutAttrEditorSheetBinding binding;
@@ -108,8 +109,6 @@ public class AttrEditorSheet extends BottomSheetDialogFragment
                             R.drawable.ic_view_select_parent));
         }
         
-        binding.valueEditorLayout.closeButton.setOnClickListener (v -> hideValueEditorLayout ());
-        
         setupViewData ();
         
         AttributeDialogs.init (requireActivity ());
@@ -171,12 +170,11 @@ public class AttrEditorSheet extends BottomSheetDialogFragment
             return;
         }
         
-        showEditorDialog (attribute);
+        showValueEditorSheet (attribute);
     }
     
-    private void hideValueEditorLayout () {
-        TransitionManager.beginDelayedTransition (binding.getRoot ());
-        binding.valueEditorLayout.getRoot ().setVisibility (View.GONE);
+    private void showValueEditorSheet (@NonNull XMLAttribute attribute) {
+        getValueEditorSheet (attribute).show (getChildFragmentManager (), "attr_value_editor_sheet");
     }
     
     private void showEditorDialog (@NonNull XMLAttribute attribute) {
@@ -371,10 +369,36 @@ public class AttrEditorSheet extends BottomSheetDialogFragment
         return mAttrListSheet;
     }
     
+    @NonNull
+    public AttrValueEditorSheet getValueEditorSheet (@NonNull XMLAttribute attribute) {
+        
+        if (mValueEditorSheet == null) {
+            mValueEditorSheet = AttrValueEditorSheet.newInstance (attribute);
+            mValueEditorSheet.setOnValueChangeListener (this::onValueChanged);
+        }
+        
+        mValueEditorSheet.setAttribute (attribute);
+        return mValueEditorSheet;
+    }
+    
+    public void onValueChanged (@NonNull IAttribute attribute, String newValue) {
+        Objects.requireNonNull (this.selectedView);
+        
+        final var attributeName = attribute.getAttributeName ();
+        final var namespace = attribute.getNamespace ();
+        
+        if (this.selectedView.hasAttribute (namespace, attributeName)) {
+            this.selectedView.updateAttribute (namespace, attributeName, newValue);
+        } else {
+            final var attr = new UiAttribute (namespace, attributeName, newValue);
+            this.selectedView.addAttribute (attr);
+        }
+    }
+    
     private void addNewAttribute (@NonNull Attr attr) {
         final XMLAttribute attribute = new XMLAttribute (attr.namespace, attr.name, "", false);
         attribute.setAttr (attr);
-        showEditorDialog (attribute);
+        showValueEditorSheet (attribute);
     }
     
     /**

app/src/main/java/com/itsaky/androidide/fragments/sheets/AttrValueEditorSheet.java

@@ -0,0 +1,177 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.itsaky.androidide.fragments.sheets;
+
+import static com.itsaky.attrinfo.models.Attr.FORMAT_BOOLEAN;
+import static com.itsaky.attrinfo.models.Attr.FORMAT_COLOR;
+import static com.itsaky.attrinfo.models.Attr.FORMAT_DIMENSION;
+import static com.itsaky.attrinfo.models.Attr.FORMAT_ENUM;
+import static com.itsaky.attrinfo.models.Attr.FORMAT_FLAG;
+import static com.itsaky.attrinfo.models.Attr.FORMAT_FLOAT;
+import static com.itsaky.attrinfo.models.Attr.FORMAT_FRACTION;
+import static com.itsaky.attrinfo.models.Attr.FORMAT_INTEGER;
+import static com.itsaky.attrinfo.models.Attr.FORMAT_REFERENCE;
+import static com.itsaky.attrinfo.models.Attr.FORMAT_STRING;
+
+import android.annotation.SuppressLint;
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.google.android.material.bottomsheet.BottomSheetDialogFragment;
+import com.itsaky.androidide.adapters.AttrValueFormatTabAdapter;
+import com.itsaky.androidide.databinding.LayoutAttrValueEditorBinding;
+import com.itsaky.androidide.fragments.attr.BaseValueEditorFragment;
+import com.itsaky.androidide.fragments.attr.BooleanEditor;
+import com.itsaky.androidide.fragments.attr.ColorEditor;
+import com.itsaky.androidide.fragments.attr.DimensionEditor;
+import com.itsaky.androidide.fragments.attr.EnumEditor;
+import com.itsaky.androidide.fragments.attr.FlagEditor;
+import com.itsaky.androidide.fragments.attr.FloatEditor;
+import com.itsaky.androidide.fragments.attr.FractionEditor;
+import com.itsaky.androidide.fragments.attr.IntegerEditor;
+import com.itsaky.androidide.fragments.attr.ReferenceEditor;
+import com.itsaky.androidide.fragments.attr.StringEditor;
+import com.itsaky.androidide.models.XMLAttribute;
+import com.itsaky.attrinfo.models.Attr;
+
+import org.jetbrains.annotations.Contract;
+
+import java.util.Objects;
+
+/**
+ * Sheet for editing value of an attribute.
+ *
+ * @author Akash Yadav
+ */
+public class AttrValueEditorSheet extends BottomSheetDialogFragment {
+    
+    private static final String KEY_ATTRIBUTE = "attrEditorSheet_attribute";
+    private LayoutAttrValueEditorBinding binding;
+    private AttrValueFormatTabAdapter adapter;
+    private XMLAttribute attribute;
+    
+    private BaseValueEditorFragment.OnValueChangeListener changeListener;
+    
+    public void setOnValueChangeListener (BaseValueEditorFragment.OnValueChangeListener changeListener) {
+        this.changeListener = changeListener;
+    }
+    
+    @NonNull
+    public static AttrValueEditorSheet newInstance (final XMLAttribute attribute) {
+        Objects.requireNonNull (attribute);
+        
+        final var args = new Bundle ();
+        args.putParcelable (KEY_ATTRIBUTE, attribute);
+        
+        final var fragment = new AttrValueEditorSheet ();
+        fragment.setArguments (args);
+        return fragment;
+    }
+    
+    @Nullable
+    @Override
+    public View onCreateView (@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        this.binding = LayoutAttrValueEditorBinding.inflate (inflater, container, false);
+        return binding.getRoot ();
+    }
+    
+    @Override
+    public void onViewCreated (@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated (view, savedInstanceState);
+        
+        if (attribute == null) {
+            this.attribute = requireArguments ().getParcelable (KEY_ATTRIBUTE);
+        }
+        
+        Objects.requireNonNull (this.attribute);
+        
+        final var namespace = this.attribute.getNamespace ();
+        final var formatText = Attr.createFormatText (attribute.getFormat ());
+        this.binding.attributeName.setText (String.format ("%s:%s", namespace.getName (), attribute.getAttributeName ()));
+        this.binding.attributeFormat.setText (formatText);
+        
+        setupTabs (formatText);
+    }
+    
+    @SuppressLint("NotifyDataSetChanged")
+    private void setupTabs (@NonNull String formatText) {
+        this.binding.tabs.removeAllTabs ();
+        this.binding.pager.setSaveEnabled (false);
+        
+        if (this.adapter != null) {
+            this.adapter.removeAll ();
+            this.adapter.notifyDataSetChanged ();
+        }
+        
+        this.adapter = new AttrValueFormatTabAdapter (getChildFragmentManager (), attribute, changeListener);
+        
+        final var formats = formatText.split ("\\|");
+        for (var formatName : formats) {
+            if (TextUtils.isEmpty (formatName) || formatName.length () < 2) {
+                continue;
+            }
+            
+            final var frag = getFragmentClass (formatName);
+            if (frag != null) {
+                this.adapter.addFragment (frag, formatName);
+            }
+        }
+        
+        binding.pager.setAdapter (this.adapter);
+        binding.tabs.setupWithViewPager (binding.pager);
+    }
+    
+    @Nullable
+    @Contract(pure = true)
+    private Class<? extends BaseValueEditorFragment> getFragmentClass (@NonNull String name) {
+        switch (name) {
+            case FORMAT_REFERENCE:
+                return ReferenceEditor.class;
+            case FORMAT_COLOR:
+                return ColorEditor.class;
+            case FORMAT_BOOLEAN:
+                return BooleanEditor.class;
+            case FORMAT_DIMENSION:
+                return DimensionEditor.class;
+            case FORMAT_FLOAT:
+                return FloatEditor.class;
+            case FORMAT_INTEGER:
+                return IntegerEditor.class;
+            case FORMAT_FRACTION:
+                return FractionEditor.class;
+            case FORMAT_STRING:
+                return StringEditor.class;
+            case FORMAT_ENUM:
+                return EnumEditor.class;
+            case FORMAT_FLAG:
+                return FlagEditor.class;
+        }
+        
+        return null;
+    }
+    
+    public void setAttribute (XMLAttribute attribute) {
+        Objects.requireNonNull (attribute);
+        this.attribute = attribute;
+    }
+}

app/src/main/java/com/itsaky/androidide/views/ScalableTabLayout.kt

@@ -0,0 +1,37 @@
+package com.itsaky.androidide.views;
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.ViewGroup
+import com.google.android.material.tabs.TabLayout
+
+// https://stackoverflow.com/a/65605542
+class ScalableTabLayout : TabLayout {
+    constructor(context: Context) : super(context)
+    constructor(context: Context, attrs: AttributeSet?) : super(context, attrs)
+    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(
+        context,
+        attrs,
+        defStyleAttr
+    )
+    
+    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+        val tabLayout = getChildAt(0) as ViewGroup
+        val childCount = tabLayout.childCount
+        if (childCount > 0) {
+            val widthPixels = MeasureSpec.getSize(widthMeasureSpec)
+            val tabMinWidth = widthPixels / childCount
+            var remainderPixels = widthPixels % childCount
+            for (i in 0 until childCount) {
+                val it = tabLayout.getChildAt(i)
+                if (remainderPixels > 0) {
+                    it.minimumWidth = tabMinWidth + 1
+                    remainderPixels--
+                } else {
+                    it.minimumWidth = tabMinWidth
+                }
+            }
+        }
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec)
+    }
+}

app/src/main/java/com/itsaky/androidide/views/ValueEditorTextView.java

@@ -1,84 +0,0 @@
-/*
- *  This file is part of AndroidIDE.
- *
- *  AndroidIDE is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  AndroidIDE is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package com.itsaky.androidide.views;
-
-import android.annotation.SuppressLint;
-import android.content.Context;
-import android.text.Editable;
-import android.text.TextWatcher;
-import android.widget.ArrayAdapter;
-
-import androidx.annotation.NonNull;
-
-import com.google.android.material.textfield.MaterialAutoCompleteTextView;
-import com.itsaky.androidide.ui.edit.IValueSuggestionProvider;
-import com.itsaky.androidide.utils.TextWatcherAdapter;
-import com.itsaky.inflater.IAttribute;
-
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.Objects;
-import java.util.Set;
-
-/**
- * {@link MaterialAutoCompleteTextView} implementation used for providing suggestions while editing
- * attribute values.
- *
- * @author Akash Yadav
- */
-@SuppressLint("ViewConstructor")
-public class ValueEditorTextView extends MaterialAutoCompleteTextView {
-
-    private final IAttribute attribute;
-    private final int format;
-    private final Set<IValueSuggestionProvider> mSuggestionProviders = new HashSet<>();
-
-    private final TextWatcher watcher =
-            new TextWatcherAdapter() {
-
-                @Override
-                public void afterTextChanged(@NonNull Editable s) {
-                    final var prefix = s.toString();
-                    final var items = new ArrayList<String>();
-
-                    for (IValueSuggestionProvider provider : mSuggestionProviders) {
-                        if (provider.checkFormat(format)) {
-                            items.addAll(provider.suggest(attribute, prefix));
-                        }
-                    }
-
-                    setThreshold(1);
-                    setAdapter(
-                            new ArrayAdapter<>(
-                                    getContext(), android.R.layout.simple_list_item_1, items));
-                }
-            };
-
-    public ValueEditorTextView(@NonNull Context context, IAttribute attribute, int format) {
-        super(context);
-        this.attribute = attribute;
-        this.format = format;
-
-        addTextChangedListener(this.watcher);
-    }
-
-    public void registerSuggestionProvider(IValueSuggestionProvider provider) {
-        Objects.requireNonNull(provider);
-        mSuggestionProviders.add(provider);
-    }
-}

app/src/main/res/color/bg_enum_chips.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~  This file is part of AndroidIDE.
+  ~
+  ~  AndroidIDE is free software: you can redistribute it and/or modify
+  ~  it under the terms of the GNU General Public License as published by
+  ~  the Free Software Foundation, either version 3 of the License, or
+  ~  (at your option) any later version.
+  ~
+  ~  AndroidIDE is distributed in the hope that it will be useful,
+  ~  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~  GNU General Public License for more details.
+  ~
+  ~  You should have received a copy of the GNU General Public License
+  ~   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+  -->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="@color/secondaryLightColor_transparent" android:state_checked="true" android:state_selected="true" />
+    <item android:color="@color/content_background" />
+</selector>

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

@@ -19,18 +19,16 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:background="@color/content_background"
-    android:paddingStart="16dp"
-    android:paddingTop="16dp"
-    android:paddingEnd="16dp"
-    android:paddingBottom="8dp">
+    android:background="@color/content_background">
 
     <TextView
         android:id="@+id/widget_name"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
+        android:background="@color/primaryDarkColor"
         android:ellipsize="middle"
         android:maxLines="1"
+        android:padding="16dp"
         android:textColor="@color/primaryTextColor"
         android:textSize="20sp"
         android:textStyle="bold"
@@ -39,55 +37,55 @@
         app:layout_constraintTop_toTopOf="parent"
         tools:text="Button" />
 
-    <TextView
-        android:id="@+id/actions_header"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="12dp"
-        android:text="@string/msg_attr_editor_actions"
-        android:textColor="@color/secondaryTextColor"
-        app:layout_constraintStart_toStartOf="@id/widget_name"
-        app:layout_constraintTop_toBottomOf="@id/widget_name" />
-
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/actions_list"
+    <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        android:layout_marginTop="4dp"
-        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/actions_header" />
-
-    <TextView
-        android:id="@+id/attrs_header"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="12dp"
-        android:text="@string/msg_applicable_attrs"
-        android:textColor="@color/secondaryTextColor"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/actions_list" />
-
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/attr_list"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="4dp"
-        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/attrs_header" />
-
-    <include
-        android:id="@+id/value_editor_layout"
-        layout="@layout/layout_attr_value_editor"
-        android:layout_width="0dp"
-        android:layout_height="0dp"
-        android:visibility="gone"
+        android:padding="16dp"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toBottomOf="@id/widget_name">
+
+        <TextView
+            android:id="@+id/actions_header"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:text="@string/msg_attr_editor_actions"
+            android:textColor="@color/secondaryTextColor"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/actions_list"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="4dp"
+            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/actions_header" />
+
+        <TextView
+            android:id="@+id/attrs_header"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:text="@string/msg_applicable_attrs"
+            android:textColor="@color/secondaryTextColor"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/actions_list" />
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/attr_list"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="4dp"
+            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/attrs_header" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
 
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -19,19 +19,21 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@color/content_background"
-    tools:padding="16dp">
+    android:background="@color/content_background">
 
     <TextView
         android:id="@+id/attribute_name"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        android:layout_marginEnd="16dp"
+        android:background="@color/primaryDarkColor"
         android:maxLines="1"
+        android:paddingStart="16dp"
+        android:paddingTop="16dp"
+        android:paddingEnd="16dp"
         android:textColor="@color/primaryTextColor"
         android:textSize="20sp"
         android:textStyle="bold"
-        app:layout_constraintEnd_toStartOf="@id/close_button"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         tools:text="android:layout_height" />
@@ -40,35 +42,46 @@
         android:id="@+id/attribute_format"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        android:layout_marginEnd="16dp"
+        android:background="@color/primaryDarkColor"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp"
+        android:paddingBottom="8dp"
         android:textColor="@color/secondaryTextColor_light"
         android:textSize="14sp"
-        app:layout_constraintEnd_toStartOf="@id/close_button"
+        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/attribute_name"
         tools:text="dimension|reference" />
 
-    <ImageView
-        android:id="@+id/close_button"
-        android:layout_width="36dp"
-        android:layout_height="36dp"
-        android:background="?selectableItemBackgroundBorderless"
-        android:clickable="true"
-        android:focusable="true"
-        android:padding="8dp"
-        android:src="@drawable/ic_close"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
-
-    <androidx.appcompat.widget.LinearLayoutCompat
-        android:id="@+id/editor_layout_container"
+    <com.itsaky.androidide.views.ScalableTabLayout
+        android:id="@+id/tabs"
         android:layout_width="0dp"
-        android:layout_height="0dp"
-        android:layout_marginTop="16dp"
-        android:orientation="vertical"
-        app:layout_constraintBottom_toBottomOf="parent"
+        android:layout_height="wrap_content"
+        android:background="@color/primaryDarkColor"
+        android:clipChildren="false"
+        android:clipToPadding="false"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/attribute_format" />
+        app:layout_constraintTop_toBottomOf="@id/attribute_format"
+        app:tabBackground="@android:color/transparent"
+        app:tabIndicatorAnimationMode="elastic"
+        app:tabIndicatorColor="@color/secondaryColor"
+        app:tabIndicatorHeight="3dp"
+        app:tabMaxWidth="0dp"
+        app:tabMode="scrollable"
+        app:tabSelectedTextColor="@color/secondaryColor"
+        app:tabTextAppearance="@style/AppTheme.TabLayout.Title" />
+
+    <androidx.viewpager.widget.ViewPager
+        android:id="@+id/pager"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="16dp"
+        android:minHeight="100dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/tabs" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -5,6 +5,7 @@
     <color name="primaryDarkColor">#010101</color>
     <color name="secondaryColor">#ff5252</color>
     <color name="secondaryLightColor">#ff867f</color>
+    <color name="secondaryLightColor_transparent">#1FFF867F</color>
     <color name="secondaryDarkColor">#c50e29</color>
     <color name="primaryTextColor">#ffffff</color>
     <color name="primaryTextColorLight">#bdbdbd</color>

sdk-info/src/main/java/com/itsaky/attrinfo/models/Attr.java

@@ -39,7 +39,7 @@ import java.util.regex.Pattern;
  * @see com.itsaky.attrinfo.AttrInfo
  */
 public class Attr {
-
+    
     public static final int REFERENCE = 1;
     public static final int COLOR = 1 << 1;
     public static final int BOOLEAN = 1 << 2;
@@ -51,122 +51,135 @@ public class Attr {
     public static final int ENUM = 1 << 8;
     public static final int FLAG = 1 << 9;
     public static final int UNKNOWN = 1 << 10;
-    private static final Logger LOG = Logger.instance("AttrInfo::Attr");
+    
+    public static final String FORMAT_REFERENCE = "reference";
+    public static final String FORMAT_COLOR = "color";
+    public static final String FORMAT_BOOLEAN = "boolean";
+    public static final String FORMAT_DIMENSION = "dimension";
+    public static final String FORMAT_FLOAT = "float";
+    public static final String FORMAT_INTEGER = "integer";
+    public static final String FORMAT_FRACTION = "fraction";
+    public static final String FORMAT_STRING = "string";
+    public static final String FORMAT_ENUM = "enum";
+    public static final String FORMAT_FLAG = "flag";
+    
+    private static final Logger LOG = Logger.instance ("AttrInfo::Attr");
+    
     public INamespace namespace;
     public String name;
     public Set<String> possibleValues;
     public int format;
-
-    public Attr(String name) {
-        this(name, INamespace.ANDROID);
+    
+    public Attr (String name) {
+        this (name, INamespace.ANDROID);
     }
-
-    public Attr(String name, INamespace namespace) {
+    
+    public Attr (String name, INamespace namespace) {
         this.name = name;
         this.namespace = namespace;
-        this.possibleValues = new TreeSet<>();
+        this.possibleValues = new TreeSet<> ();
     }
-
-    public static int formatForName(@NonNull String names) {
+    
+    public static int formatForName (@NonNull String names) {
         var result = 0;
-        if (names.contains("|")) {
-            for (var name : names.split(Pattern.quote("|"))) {
-                result |= formatForSingleName(name);
+        if (names.contains ("|")) {
+            for (var name : names.split (Pattern.quote ("|"))) {
+                result |= formatForSingleName (name);
             }
         } else {
-            result = formatForSingleName(names);
+            result = formatForSingleName (names);
         }
         return result;
     }
-
+    
     @Contract(pure = true)
-    public static int formatForSingleName(@NonNull String name) {
+    public static int formatForSingleName (@NonNull String name) {
         switch (name) {
-            case "reference":
+            case FORMAT_REFERENCE:
                 return REFERENCE;
-            case "color":
+            case FORMAT_COLOR:
                 return COLOR;
-            case "boolean":
+            case FORMAT_BOOLEAN:
                 return BOOLEAN;
-            case "dimension":
+            case FORMAT_DIMENSION:
                 return DIMENSION;
-            case "float":
+            case FORMAT_FLOAT:
                 return FLOAT;
-            case "integer":
+            case FORMAT_INTEGER:
                 return INTEGER;
-            case "fraction":
+            case FORMAT_FRACTION:
                 return FRACTION;
-            case "string":
+            case FORMAT_STRING:
                 return STRING;
-            case "enum":
+            case FORMAT_ENUM:
                 return ENUM;
-            case "flag":
+            case FORMAT_FLAG:
                 return FLAG;
-            default:
-                return UNKNOWN;
         }
+        
+        return UNKNOWN;
     }
-
-    public static String createFormatText(int format) {
-        final var formats = new ArrayList<String>();
+    
+    public static String createFormatText (int format) {
+        final var formats = new ArrayList<String> ();
         if ((format & REFERENCE) != 0) {
-            formats.add("reference");
+            formats.add (FORMAT_REFERENCE);
         }
-
+        
         if ((format & COLOR) != 0) {
-            formats.add("color");
+            formats.add (FORMAT_COLOR);
         }
-
+        
         if ((format & BOOLEAN) != 0) {
-            formats.add("boolean");
+            formats.add (FORMAT_BOOLEAN);
         }
-
+        
         if ((format & DIMENSION) != 0) {
-            formats.add("dimension");
+            formats.add (FORMAT_DIMENSION);
         }
-
+        
         if ((format & FLOAT) != 0) {
-            formats.add("float");
+            formats.add (FORMAT_FLOAT);
         }
-
+        
         if ((format & INTEGER) != 0) {
-            formats.add("integer");
+            formats.add (FORMAT_INTEGER);
         }
-
+        
         if ((format & FRACTION) != 0) {
-            formats.add("fraction");
+            formats.add (FORMAT_FRACTION);
         }
-
+        
         if ((format & STRING) != 0) {
-            formats.add("string");
+            formats.add (FORMAT_STRING);
         }
-
+        
         if ((format & ENUM) != 0) {
-            formats.add("enum");
+            formats.add (FORMAT_ENUM);
         }
-
+        
         if ((format & FLAG) != 0) {
-            formats.add("flag");
+            formats.add (FORMAT_FLAG);
         }
-
-        if (formats.isEmpty()) {
-            formats.add("unknown");
+        
+        if (formats.isEmpty ()) {
+            formats.add ("unknown");
         }
-
-        return TextUtils.join("|", formats);
+        
+        return TextUtils.join ("|", formats);
     }
-
-    public boolean hasPossibleValues() {
-        return possibleValues != null && possibleValues.size() > 0;
+    
+    public boolean hasPossibleValues () {
+        return possibleValues != null && possibleValues.size () > 0;
     }
-
-    public boolean hasFormat(int format) {
+    
+    public boolean hasFormat (int format) {
         return (this.format & format) != 0;
     }
-
+    
     @NonNull
     @Override
-    public String toString() {
+    public String toString () {
         return "Attr ["
                 + "  name: "
                 + name
@@ -175,33 +188,33 @@ public class Attr {
                 + namespace
                 + "\n"
                 + "  values: "
-                + TextUtils.join(", ", this.possibleValues)
+                + TextUtils.join (", ", this.possibleValues)
                 + "\n"
                 + "  format: "
                 + format
                 + "\n"
                 + "]";
     }
-
+    
     @Override
-    public boolean equals(Object o) {
+    public boolean equals (Object o) {
         if (this == o) {
             return true;
         }
-
-        if (o == null || getClass() != o.getClass()) {
+        
+        if (o == null || getClass () != o.getClass ()) {
             return false;
         }
-
+        
         Attr attr = (Attr) o;
         return format == attr.format
-                && Objects.equals(namespace, attr.namespace)
-                && Objects.equals(name, attr.name)
-                && Objects.equals(possibleValues, attr.possibleValues);
+                && Objects.equals (namespace, attr.namespace)
+                && Objects.equals (name, attr.name)
+                && Objects.equals (possibleValues, attr.possibleValues);
     }
-
+    
     @Override
-    public int hashCode() {
-        return Objects.hash(namespace, name, possibleValues, format);
+    public int hashCode () {
+        return Objects.hash (namespace, name, possibleValues, format);
     }
 }