Merge pull request #124 from lacerta-doc/add_edit_meta_dialog

結合したドキュメントの名前を変えられるように, タグをドキュメントに付与/剥奪できるように

component/common/src/main/java/one/nem/lacerta/component/common/LacertaApplyTagAdapter.java

@@ -0,0 +1,83 @@
+package one.nem.lacerta.component.common;
+
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.CheckBox;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+
+import one.nem.lacerta.component.common.model.DocumentTagApplyTagDialogExtendedModel;
+import one.nem.lacerta.model.document.tag.DocumentTag;
+
+public class LacertaApplyTagAdapter extends RecyclerView.Adapter<LacertaApplyTagAdapter.LacertaApplyTagViewHolder>{
+
+    // Listener
+    public interface LacertaApplyTagDialogListener {
+        void itemChecked(View view, String tagId);
+        void itemUnchecked(View view, String tagId);
+    }
+
+    // Variables
+    private ArrayList<DocumentTagApplyTagDialogExtendedModel> documentTagArrayList;
+    private LacertaApplyTagDialogListener listener;
+
+    // Setter
+    public LacertaApplyTagAdapter setListener(LacertaApplyTagDialogListener listener) {
+        this.listener = listener;
+        return this;
+    }
+
+    public LacertaApplyTagAdapter setDocumentTagArrayList(ArrayList<DocumentTagApplyTagDialogExtendedModel> documentTagArrayList) {
+        this.documentTagArrayList = documentTagArrayList;
+        return this;
+    }
+
+    // Empty constructor
+    public LacertaApplyTagAdapter() {
+    }
+
+    @NonNull
+    @Override
+    public LacertaApplyTagAdapter.LacertaApplyTagViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.apply_tag_list_item, parent, false);
+        return new LacertaApplyTagAdapter.LacertaApplyTagViewHolder(view);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull LacertaApplyTagAdapter.LacertaApplyTagViewHolder holder, int position) {
+        DocumentTagApplyTagDialogExtendedModel documentTag = documentTagArrayList.get(position);
+        if (holder.checkBox == null) {
+            Log.d("LacertaApplyTagAdapter", "onBindViewHolder: holder.checkBox is null");
+        }
+        holder.checkBox.setText(documentTag.getName());
+        holder.checkBox.setChecked(documentTag.getIsChecked());
+        holder.checkBox.setOnCheckedChangeListener((buttonView, isChecked) -> {
+            if (isChecked) {
+                listener.itemChecked(buttonView, documentTag.getId());
+            } else {
+                listener.itemUnchecked(buttonView, documentTag.getId());
+            }
+        });
+    }
+
+    @Override
+    public int getItemCount() {
+        return documentTagArrayList == null ? 0 : documentTagArrayList.size();
+    }
+
+    public class LacertaApplyTagViewHolder extends RecyclerView.ViewHolder {
+
+        CheckBox checkBox;
+
+        public LacertaApplyTagViewHolder(@NonNull View itemView) {
+            super(itemView);
+
+            checkBox = itemView.findViewById(R.id.tag_check_box);
+        }
+    }
+}

component/common/src/main/java/one/nem/lacerta/component/common/LacertaApplyTagDialog.java

@@ -0,0 +1,184 @@
+package one.nem.lacerta.component.common;
+
+import android.app.Dialog;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.CheckBox;
+import android.widget.Checkable;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import androidx.fragment.app.DialogFragment;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.stream.Collectors;
+
+import javax.inject.Inject;
+
+import dagger.hilt.android.AndroidEntryPoint;
+import one.nem.lacerta.component.common.model.DocumentTagApplyTagDialogExtendedModel;
+import one.nem.lacerta.data.Document;
+import one.nem.lacerta.data.LacertaLibrary;
+import one.nem.lacerta.model.document.tag.DocumentTag;
+import one.nem.lacerta.utils.LacertaLogger;
+
+@AndroidEntryPoint
+public class LacertaApplyTagDialog extends DialogFragment {
+
+    @Inject
+    LacertaLogger logger;
+
+    @Inject
+    LacertaLibrary lacertaLibrary;
+
+    // Listener
+    public interface LacertaApplyTagDialogListener {
+        void onDialogPositiveClick(ArrayList<DocumentTag> appliedTags);
+        void onDialogNegativeClick();
+    }
+
+    // Variables
+    private String title;
+    private String message;
+    private String positiveButtonText;
+    private String negativeButtonText;
+    private String documentId;
+    private LacertaApplyTagDialogListener listener;
+    private ArrayList<DocumentTag> registeredTags;
+    private ArrayList<DocumentTag> appliedTags;
+
+    // Setter
+
+    public LacertaApplyTagDialog setListener(LacertaApplyTagDialogListener listener) {
+        this.listener = listener;
+        return this;
+    }
+
+    public LacertaApplyTagDialog setTitle(String title) {
+        this.title = title;
+        return this;
+    }
+
+    public LacertaApplyTagDialog setMessage(String message) {
+        this.message = message;
+        return this;
+    }
+
+    public LacertaApplyTagDialog setPositiveButtonText(String positiveButtonText) {
+        this.positiveButtonText = positiveButtonText;
+        return this;
+    }
+
+    public LacertaApplyTagDialog setNegativeButtonText(String negativeButtonText) {
+        this.negativeButtonText = negativeButtonText;
+        return this;
+    }
+
+    public LacertaApplyTagDialog setDocumentId(String documentId) {
+        this.documentId = documentId;
+        return this;
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(getActivity());
+        LayoutInflater inflater = requireActivity().getLayoutInflater();
+        View view = inflater.inflate(R.layout.lacerta_dialog_apply_tag, null);
+
+        // RecyclerView
+        RecyclerView recyclerView = view.findViewById(R.id.apply_tag_list);
+
+        LacertaApplyTagAdapter lacertaApplyTagAdapter = new LacertaApplyTagAdapter();
+        lacertaApplyTagAdapter.setListener(new LacertaApplyTagAdapter.LacertaApplyTagDialogListener() {
+            @Override
+            public void itemChecked(View view, String tagId) {
+                applyChangeToVariable(true, tagId);
+            }
+
+            @Override
+            public void itemUnchecked(View view, String tagId) {
+                applyChangeToVariable(false, tagId);
+            }
+        });
+
+        recyclerView.setAdapter(lacertaApplyTagAdapter);
+        recyclerView.setLayoutManager(new LinearLayoutManager(view.getContext()));
+
+        getDocumentTagArrayList(documentId).thenAccept(documentTagArrayList -> {
+            lacertaApplyTagAdapter.setDocumentTagArrayList(documentTagArrayList);
+            lacertaApplyTagAdapter.notifyDataSetChanged(); // TODO-rca: アニメーション
+        });
+
+        // Set the dialog title
+        builder.setTitle(title)
+                .setMessage(message)
+                .setView(view)
+                .setPositiveButton(positiveButtonText == null ? "OK" : positiveButtonText, (dialog, id) -> {
+                    // Send the positive button event back to the host activity
+                    listener.onDialogPositiveClick(this.appliedTags);
+                })
+                .setNegativeButton(negativeButtonText == null ? "Cancel" : negativeButtonText, (dialog, id) -> {
+                    // Send the negative button event back to the host activity
+                    listener.onDialogNegativeClick();
+                });
+        return builder.create();
+    }
+
+    private void applyChangeToVariable(boolean isChecked, String tagId) {
+        if (isChecked) {
+            this.registeredTags.stream().filter(tag -> tag.getId().equals(tagId)).findFirst().ifPresent(tag -> this.appliedTags.add(tag));
+        } else {
+            this.appliedTags.stream().filter(tag -> tag.getId().equals(tagId)).findFirst().ifPresent(tag -> this.appliedTags.remove(tag));
+        }
+    }
+
+    private CompletableFuture<ArrayList<DocumentTagApplyTagDialogExtendedModel>> getDocumentTagArrayList(String documentId) {
+        return CompletableFuture.supplyAsync(() -> {
+            ArrayList<DocumentTagApplyTagDialogExtendedModel> documentTagArrayList = new ArrayList<>();
+            setRegisteredTagList().thenRun(() -> setAppliedTagList(documentId).join()).thenAccept(Void -> {
+                logger.debug("getDocumentTagArrayList", "this.registeredTags.size(): " + this.registeredTags.size());
+                logger.debug("getDocumentTagArrayList", "this.appliedTags.size(): " + this.appliedTags.size());
+
+                documentTagArrayList.addAll(this.registeredTags.stream().map(tag -> {
+                    DocumentTagApplyTagDialogExtendedModel documentTag = new DocumentTagApplyTagDialogExtendedModel(
+                            new DocumentTag(tag.getId(), tag.getName(), tag.getColor()),
+                            this.appliedTags.stream().anyMatch(appliedTag -> appliedTag.getId().equals(tag.getId()))
+                    );
+                    return documentTag;
+                }).collect(Collectors.toCollection(ArrayList::new)));
+
+            }).join();
+            return documentTagArrayList;
+        });
+    }
+
+    private CompletableFuture<Void> setRegisteredTagList() {
+        return CompletableFuture.runAsync(() -> {
+            this.registeredTags = new ArrayList<>();
+            this.lacertaLibrary.getTagList().thenAccept(documentTagList -> {
+                for (int i = 0; i < documentTagList.size(); i++) {
+                    this.registeredTags.add(new DocumentTag(documentTagList.get(i).getId(), documentTagList.get(i).getName(), documentTagList.get(i).getColor()));
+                }
+            }).join();
+        });
+    }
+
+    private CompletableFuture<Void> setAppliedTagList(String documentId) {
+        return CompletableFuture.runAsync(() -> {
+            this.appliedTags = new ArrayList<>();
+            this.lacertaLibrary.getAppliedTagList(documentId).thenAccept(documentTagList -> {
+                for (int i = 0; i < documentTagList.size(); i++) {
+                    this.appliedTags.add(new DocumentTag(documentTagList.get(i).getId(), documentTagList.get(i).getName(), documentTagList.get(i).getColor()));
+                }
+            }).join();
+        });
+    }
+}

component/common/src/main/java/one/nem/lacerta/component/common/LacertaEditMetaDialog.java

@@ -0,0 +1,4 @@
+package one.nem.lacerta.component.common;
+
+public class LacertaEditMetaDialog {
+}

component/common/src/main/java/one/nem/lacerta/component/common/model/DocumentTagApplyTagDialogExtendedModel.java

@@ -0,0 +1,31 @@
+package one.nem.lacerta.component.common.model;
+
+import one.nem.lacerta.model.document.tag.DocumentTag;
+
+// TODO-rca: クラス名が長すぎ
+
+/**
+ * DocumentTagを設定するダイアログで使うための拡張モデル
+ * チェックボックスの状態を保持するように
+ */
+public class DocumentTagApplyTagDialogExtendedModel extends DocumentTag {
+
+    private boolean isChecked;
+
+    public DocumentTagApplyTagDialogExtendedModel(DocumentTag documentTag) {
+        super(documentTag.getId(), documentTag.getName(), documentTag.getColor());
+    }
+
+    public DocumentTagApplyTagDialogExtendedModel(DocumentTag documentTag, boolean isChecked) {
+        super(documentTag.getId(), documentTag.getName(), documentTag.getColor());
+        this.isChecked = isChecked;
+    }
+
+    public boolean getIsChecked() {
+        return isChecked;
+    }
+
+    public void setIsChecked(boolean checked) {
+        isChecked = checked;
+    }
+}

component/common/src/main/res/layout/apply_tag_list_item.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <CheckBox
+        android:id="@+id/tag_check_box"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textSize="16sp"
+        android:layout_marginHorizontal="16dp"
+        android:layout_marginVertical="4dp"
+        android:text="CheckBox" />
+
+</LinearLayout>

component/common/src/main/res/layout/lacerta_dialog_apply_tag.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/apply_tag_list"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</FrameLayout>

component/common/src/main/res/layout/lacerta_dialog_edit_meta.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/title_text_input_layout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingTop="8dp"
+        android:paddingHorizontal="16dp"
+        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/tag_name_edit_text"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+    </com.google.android.material.textfield.TextInputLayout>
+
+</LinearLayout>

component/viewer/src/main/java/one/nem/lacerta/component/viewer/ViewerContainerFragment.java

@@ -19,13 +19,18 @@ import com.google.android.material.tabs.TabLayoutMediator;
 import com.google.android.material.textfield.TextInputEditText;
 import com.google.android.material.textfield.TextInputLayout;
 
+import java.util.ArrayList;
+import java.util.stream.Collectors;
+
 import javax.inject.Inject;
 
 import dagger.hilt.android.AndroidEntryPoint;
+import one.nem.lacerta.component.common.LacertaApplyTagDialog;
 import one.nem.lacerta.component.common.picker.LacertaFilePickerDialog;
 import one.nem.lacerta.data.Document;
 import one.nem.lacerta.data.LacertaLibrary;
 import one.nem.lacerta.model.document.page.Page;
+import one.nem.lacerta.model.document.tag.DocumentTag;
 import one.nem.lacerta.model.pref.ToxiDocumentModel;
 import one.nem.lacerta.utils.LacertaLogger;
 
@@ -52,6 +57,7 @@ public class ViewerContainerFragment extends Fragment {
     private String documentId;
     private String documentName;
     private boolean hasCombined = false;
+    private ViewerViewPagerAdapter viewerViewPagerAdapter;
 
     public ViewerContainerFragment() {
         // Required empty public constructor
@@ -102,7 +108,7 @@ public class ViewerContainerFragment extends Fragment {
         ViewPager2 viewPager = view.findViewById(R.id.view_pager);
 
         // Init view pager adapter
-        ViewerViewPagerAdapter viewerViewPagerAdapter = new ViewerViewPagerAdapter(requireActivity());
+        this.viewerViewPagerAdapter = new ViewerViewPagerAdapter(requireActivity());
         viewPager.setAdapter(viewerViewPagerAdapter);
 
         // Init tab layout
@@ -112,22 +118,24 @@ public class ViewerContainerFragment extends Fragment {
         Toolbar toolbar = view.findViewById(R.id.toolbar);
         initToolbar(toolbar, true, documentName);
 
-        if (this.hasCombined) {
+        // Get document page
+        if (this.hasCombined) { // 結合親の場合
             logger.debug("ViewerContainerFragment", "hasCombined: " + hasCombined);
             lacertaLibrary.getCombinedDocumentToxiList(documentId).thenAccept(combinedDocumentToxiList -> {
                 logger.debug("ViewerContainerFragment", "combinedDocumentToxiList: " + combinedDocumentToxiList.size());
-                for (ToxiDocumentModel toxiDocumentModel : combinedDocumentToxiList) {
+
-                    logger.debug("ViewerContainerFragment", "titleCache: " + toxiDocumentModel.getTitleCache());
+                viewerViewPagerAdapter.setFragmentTargetIdList(
-                    viewerViewPagerAdapter
+                        combinedDocumentToxiList.stream().map(ToxiDocumentModel::getChildDocumentId).collect(Collectors.toCollection(ArrayList::new)));
-                            .addFragment(ViewerBodyFragment.newInstance(toxiDocumentModel.getChildDocumentId(), toxiDocumentModel.getTitleCache()),
+                viewerViewPagerAdapter.setFragmentTitleList(
-                                    toxiDocumentModel.getTitleCache());
+                        combinedDocumentToxiList.stream().map(ToxiDocumentModel::getTitleCache).collect(Collectors.toCollection(ArrayList::new)));
-                }
+
                 viewerViewPagerAdapter.notifyItemRangeChanged(0, combinedDocumentToxiList.size());
             });
-        } else {
+        } else { // それ以外の場合
             logger.debug("ViewerContainerFragment", "hasCombined: " + hasCombined);
             tabLayout.setVisibility(View.GONE);
-            viewerViewPagerAdapter.addFragment(ViewerBodyFragment.newInstance(documentId, documentName), documentName);
+            viewerViewPagerAdapter.setFragmentTargetIdList(new ArrayList<String>(){{add(documentId);}}); // TODO-rca: 読みにくいので直接追加できるようにする
+            viewerViewPagerAdapter.setFragmentTitleList(new ArrayList<String>(){{add(documentName);}});
             viewerViewPagerAdapter.notifyItemRangeChanged(0, 1);
         }
 
@@ -140,13 +148,54 @@ public class ViewerContainerFragment extends Fragment {
 
             ImageButton imageButton = customView.findViewById(R.id.tab_modify);
             imageButton.setOnClickListener(v -> {
-                Toast.makeText(getContext(), "Working!, Index:" + position, Toast.LENGTH_SHORT).show();
+                renameCombinedDocument(
+                        this.documentId,
+                        viewerViewPagerAdapter.getFragmentTargetId(position),
+                        viewerViewPagerAdapter.getFragmentTitle(position),
+                        position);
             });
 
             tab.setCustomView(customView);
         }).attach();
     }
 
+    private void renameCombinedDocument(String parentId, String childId, String current, int position) { // TODO-rca: 無理やりpositionを渡してるのでなんとかする
+        MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(getContext());
+        builder.setTitle("アイテム名の変更");
+        builder.setMessage("アイテム名を入力してください");
+
+        View view = LayoutInflater.from(getContext()).inflate(one.nem.lacerta.shared.ui.R.layout.lacerta_dialog_edit_text_layout, null);
+        TextInputEditText textInputEditText = view.findViewById(one.nem.lacerta.shared.ui.R.id.custom_edit_text);
+        TextInputLayout textInputLayout = view.findViewById(one.nem.lacerta.shared.ui.R.id.custom_text_input_layout);
+        textInputEditText.setText(current);
+        textInputLayout.setHint("アイテム名");
+        builder.setView(view);
+
+        builder.setPositiveButton("変更", (dialog, which) -> {
+            document.renameDocument(childId, textInputEditText.getText().toString()).thenCombine(
+                lacertaLibrary.updateTitleCache(parentId, childId, textInputEditText.getText().toString()), (aVoid, aVoid2) -> {
+                    getActivity().runOnUiThread(() -> {
+                        Toast.makeText(getContext(), "変更しました", Toast.LENGTH_SHORT).show();
+                        updateTabTitle(position, textInputEditText.getText().toString());
+                        dialog.dismiss();
+                    });
+                    return null;
+                });
+        });
+        builder.setNegativeButton("キャンセル", (dialog, which) -> {
+            dialog.cancel();
+        });
+
+        builder.show();
+    }
+
+    private void updateTabTitle(int position, String title) {
+        ArrayList<String> fragmentTitleList = viewerViewPagerAdapter.getFragmentTitleList();
+        fragmentTitleList.set(position, title);
+        viewerViewPagerAdapter.setFragmentTitleList(fragmentTitleList);
+        viewerViewPagerAdapter.notifyItemChanged(position);
+    }
+
     /**
      * Toolbarをinitする
      *
@@ -187,6 +236,9 @@ public class ViewerContainerFragment extends Fragment {
                 } else if (item.getItemId() == R.id.action_combine) {
                     combineDocument();
                     return true;
+                } else if (item.getItemId() == R.id.action_apply_tag) {
+                    applyTag();
+                    return true;
                 } else {
                     return false;
                 }
@@ -194,6 +246,33 @@ public class ViewerContainerFragment extends Fragment {
         });
     }
 
+    private void applyTag() {
+        LacertaApplyTagDialog lacertaApplyTagDialog = new LacertaApplyTagDialog();
+        lacertaApplyTagDialog
+                .setTitle("タグの適用")
+                .setMessage("タグを適用するファイルを選択してください")
+                .setNegativeButtonText("キャンセル")
+                .setDocumentId(documentId)
+                .setListener(new LacertaApplyTagDialog.LacertaApplyTagDialogListener() {
+                    @Override
+                    public void onDialogPositiveClick(ArrayList<DocumentTag> appliedTags) {
+                        logger.debug("ViewerContainerFragment", "Dialog Result: appliedTags: " + appliedTags.size());
+                        lacertaLibrary.applyTagListToDocument(documentId, appliedTags).thenAccept(aVoid -> {
+                            getActivity().runOnUiThread(() -> {
+                                Toast.makeText(getContext(), "タグを適用しました", Toast.LENGTH_SHORT).show();
+                                lacertaApplyTagDialog.dismiss();
+                            });
+                        });
+                    }
+
+                    @Override
+                    public void onDialogNegativeClick() {
+                        lacertaApplyTagDialog.dismiss();
+                    }
+                })
+                .show(getChildFragmentManager(), "LacertaApplyTagDialog");
+    }
+
     private void combineDocument() {
         LacertaFilePickerDialog lacertaFilePickerDialog = new LacertaFilePickerDialog();
         lacertaFilePickerDialog.setListener((fileName, selectedId) -> {

component/viewer/src/main/java/one/nem/lacerta/component/viewer/ViewerViewPagerAdapter.java

@@ -13,13 +13,17 @@ import java.util.ArrayList;
 public class ViewerViewPagerAdapter extends FragmentStateAdapter {
 
     // Variables
-    private ArrayList<Fragment> fragmentArrayList = new ArrayList<>();
+    private ArrayList<String> fragmentTargetIdList = new ArrayList<>();
     private ArrayList<String> fragmentTitleList = new ArrayList<>();
 
     // Setter
-    public void addFragment(Fragment fragment, String title){
+
-        fragmentArrayList.add(fragment);
+    public void setFragmentTargetIdList(ArrayList<String> fragmentTargetIdList) {
-        fragmentTitleList.add(title);
+        this.fragmentTargetIdList = fragmentTargetIdList;
+    }
+
+    public void setFragmentTitleList(ArrayList<String> fragmentTitleList) {
+        this.fragmentTitleList = fragmentTitleList;
     }
 
     public ViewerViewPagerAdapter(@NonNull FragmentActivity fragmentActivity) {
@@ -29,16 +33,40 @@ public class ViewerViewPagerAdapter extends FragmentStateAdapter {
     @NonNull
     @Override
     public Fragment createFragment(int position) {
-        return fragmentArrayList.get(position);
+        return ViewerBodyFragment.newInstance(fragmentTargetIdList.get(position), fragmentTitleList.get(position));
     }
 
     @Override
     public int getItemCount() {
-        return fragmentArrayList == null ? 0 : fragmentArrayList.size();
+        if (fragmentTargetIdList == null || fragmentTitleList == null) {
+            return 0;
+        } else if (fragmentTargetIdList.size() != fragmentTitleList.size()) {
+            throw new IllegalStateException("fragmentTargetIdList.size() != fragmentTitleList.size()");
+        } else {
+            return fragmentTargetIdList.size();
+        }
     }
 
     @Nullable
     public CharSequence getTabTitle(int position) {
         return fragmentTitleList.get(position);
     }
+
+    // Getter
+
+    public String getFragmentTargetId(int position) {
+        return fragmentTargetIdList.get(position);
+    }
+
+    public String getFragmentTitle(int position) {
+        return fragmentTitleList.get(position);
+    }
+
+    public ArrayList<String> getFragmentTargetIdList() {
+        return fragmentTargetIdList;
+    }
+
+    public ArrayList<String> getFragmentTitleList() {
+        return fragmentTitleList;
+    }
 }

component/viewer/src/main/res/menu/viewer_menu.xml

@@ -20,4 +20,12 @@
         android:id="@+id/action_combine"
         android:title="結合" />
 
+    <item
+        android:id="@+id/action_edit_meta"
+        android:title="メタデータ編集" />
+
+    <item
+        android:id="@+id/action_apply_tag"
+        android:title="タグの管理" />
+
 </menu>

data/src/main/java/one/nem/lacerta/data/LacertaLibrary.java

@@ -45,12 +45,16 @@ public interface LacertaLibrary {
 
     CompletableFuture<Void> addTagToDocument(String documentId, String tagId);
 
+    CompletableFuture<Void> applyTagListToDocument(String documentId, ArrayList<DocumentTag> tagList);
+
     CompletableFuture<Void> removeTagFromDocument(String documentId, String tagId);
 
     // Combined Document
 
     CompletableFuture<Void> combineDocument(String parentId, String childId);
 
+    CompletableFuture<Void> updateTitleCache(String parentId, String childId, String titleCache);
+
     CompletableFuture<Void> uncombineDocument(String parentId, String childId);
 
 //    CompletableFuture<Void> combineDocument(String parentId, ArrayList<String> childIdList);

data/src/main/java/one/nem/lacerta/data/impl/LacertaLibraryImpl.java

@@ -321,6 +321,20 @@ public class LacertaLibraryImpl implements LacertaLibrary {
         });
     }
 
+    @Override
+    public CompletableFuture<Void> applyTagListToDocument(String documentId, ArrayList<DocumentTag> tagArrayList) {
+        return CompletableFuture.supplyAsync(() -> { // TODO-rca: 必要なものだけInsertするべき, 時間があれば...
+            // 一旦全てのタグを削除
+            database.toxiDocumentTagDao().deleteByDocumentId(documentId);
+            logger.debug("LacertaLibraryImpl", "Database Query: Deleted ToxiDocumentTagEntity");
+            // タグを追加
+            for (DocumentTag documentTag : tagArrayList) {
+                addTagToDocument(documentId, documentTag.getId());
+            }
+            return null;
+        });
+    }
+
     @Override
     public CompletableFuture<Void> removeTagFromDocument(String documentId, String tagId) {
         return CompletableFuture.supplyAsync(() -> {
@@ -375,6 +389,21 @@ public class LacertaLibraryImpl implements LacertaLibrary {
         logger.debug("LacertaLibraryImpl", "Database Query: Inserted ToxiDocumentEntity");
     }
 
+    @Override
+    public CompletableFuture<Void> updateTitleCache(String parentId, String documentId, String titleCache) {
+        return CompletableFuture.supplyAsync(() -> {
+            ToxiDocumentEntity toxiDocumentEntity = database.toxiDocumentDao().findByParentIdAndChildId(parentId, documentId);
+            if (toxiDocumentEntity == null) {
+                logger.warn("LacertaLibraryImpl", "ToxiDocumentEntity is not found.");
+                return null;
+            }
+            toxiDocumentEntity.titleCache = titleCache;
+            database.toxiDocumentDao().update(toxiDocumentEntity);
+            logger.debug("LacertaLibraryImpl", "Database Query: Updated ToxiDocumentEntity");
+            return null;
+        });
+    }
+
     @Override
     public CompletableFuture<Void> uncombineDocument(String parentId, String childId) {
         return CompletableFuture.supplyAsync(() -> {

source/src/main/java/one/nem/lacerta/source/database/dao/ToxiDocumentDao.java

@@ -15,6 +15,9 @@ public interface ToxiDocumentDao {
     @Query("SELECT * FROM toxi_document WHERE parent_document_id = :parentId AND is_active = 1 ORDER BY `order` ASC")
     List<ToxiDocumentEntity> findByParentId(String parentId);
 
+    @Query("SELECT * FROM toxi_document WHERE parent_document_id = :parentId AND child_document_id = :childId AND is_active = 1")
+    ToxiDocumentEntity findByParentIdAndChildId(String parentId, String childId);
+
     @Insert
     void insert(ToxiDocumentEntity toxiDocument);