2 * Copyright © 2021 Damyan Ivanov.
3 * This file is part of MoLe.
4 * MoLe is free software: you can distribute it and/or modify it
5 * under the term of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your opinion), any later version.
9 * MoLe is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License terms for details.
14 * You should have received a copy of the GNU General Public License
15 * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
18 package net.ktnx.mobileledger.ui.templates;
20 import android.os.AsyncTask;
22 import androidx.lifecycle.LiveData;
23 import androidx.lifecycle.MutableLiveData;
24 import androidx.lifecycle.Observer;
25 import androidx.lifecycle.ViewModel;
27 import net.ktnx.mobileledger.BuildConfig;
28 import net.ktnx.mobileledger.dao.TemplateAccountDAO;
29 import net.ktnx.mobileledger.dao.TemplateHeaderDAO;
30 import net.ktnx.mobileledger.db.DB;
31 import net.ktnx.mobileledger.db.TemplateAccount;
32 import net.ktnx.mobileledger.db.TemplateHeader;
33 import net.ktnx.mobileledger.db.TemplateWithAccounts;
34 import net.ktnx.mobileledger.model.TemplateDetailsItem;
35 import net.ktnx.mobileledger.utils.Logger;
37 import java.util.ArrayList;
38 import java.util.Collections;
39 import java.util.List;
40 import java.util.Locale;
41 import java.util.Objects;
42 import java.util.concurrent.atomic.AtomicInteger;
44 public class TemplateDetailsViewModel extends ViewModel {
45 private final MutableLiveData<List<TemplateDetailsItem>> items =
46 new MutableLiveData<>(Collections.emptyList());
47 private Long mPatternId;
48 private String mDefaultPatternName;
49 private boolean itemsLoaded = false;
50 private final AtomicInteger syntheticItemId = new AtomicInteger(0);
52 public String getDefaultPatternName() {
53 return mDefaultPatternName;
55 public void setDefaultPatternName(String name) {
56 mDefaultPatternName = name;
59 public void resetItems() {
60 applyList(new ArrayList<>());
62 public void applyList(List<TemplateDetailsItem> srcList) {
63 applyList(srcList, false);
65 public void applyList(List<TemplateDetailsItem> srcList, boolean async) {
67 if (srcList == null) {
68 srcList = new ArrayList<>(items.getValue());
74 srcList = Collections.unmodifiableList(srcList);
77 Logger.debug("tmpl", "Considering old list");
78 for (TemplateDetailsItem item : srcList)
79 Logger.debug("tmpl", String.format(Locale.US, " id %d pos %d", item.getId(),
83 ArrayList<TemplateDetailsItem> newList = new ArrayList<>();
85 boolean hasEmptyItem = false;
87 if (srcList.size() < 1) {
88 final TemplateDetailsItem.Header header = TemplateDetailsItem.createHeader();
89 header.setName(mDefaultPatternName);
95 newList.add(srcList.get(0));
98 for (int i = 1; i < srcList.size(); i++) {
99 final TemplateDetailsItem.AccountRow accRow = srcList.get(i)
101 if (accRow.isEmpty()) {
102 // it is normal to have two empty rows if they are at the
103 // top (position 1 and 2)
104 if (!hasEmptyItem || i < 3) {
105 accRow.setPosition(newList.size());
109 changes = true; // row skipped
114 accRow.setPosition(newList.size());
119 while (newList.size() < 3) {
120 final TemplateDetailsItem.AccountRow accountRow =
121 TemplateDetailsItem.createAccountRow();
122 accountRow.setId(genItemId());
123 accountRow.setPosition(newList.size());
124 newList.add(accountRow);
130 final TemplateDetailsItem.AccountRow accountRow =
131 TemplateDetailsItem.createAccountRow();
132 accountRow.setId(genItemId());
133 accountRow.setPosition(newList.size());
134 newList.add(accountRow);
139 Logger.debug("tmpl", "Changes detected, applying new list");
142 items.postValue(newList);
144 items.setValue(newList);
147 Logger.debug("tmpl", "No changes, ignoring new list");
149 public int genItemId() {
150 return syntheticItemId.decrementAndGet();
152 public LiveData<List<TemplateDetailsItem>> getItems(Long patternId) {
153 if (itemsLoaded && Objects.equals(patternId, this.mPatternId))
156 if (patternId != null && patternId <= 0)
157 throw new IllegalArgumentException("Pattern ID " + patternId + " is invalid");
159 mPatternId = patternId;
161 if (mPatternId == null) {
168 LiveData<TemplateWithAccounts> dbList = db.getTemplateDAO()
169 .getTemplateWithAccounts(mPatternId);
170 Observer<TemplateWithAccounts> observer = new Observer<TemplateWithAccounts>() {
172 public void onChanged(TemplateWithAccounts src) {
173 ArrayList<TemplateDetailsItem> l = new ArrayList<>();
175 TemplateDetailsItem header = TemplateDetailsItem.fromRoomObject(src.header);
176 Logger.debug("tmpl-db", "Got header template item with id of " + header.getId());
178 Collections.sort(src.accounts,
179 (o1, o2) -> Long.compare(o1.getPosition(), o2.getPosition()));
180 for (TemplateAccount acc : src.accounts) {
181 l.add(TemplateDetailsItem.fromRoomObject(acc));
184 for (TemplateDetailsItem i : l) {
185 Logger.debug("tmpl-db", "Loaded pattern item " + i);
190 dbList.removeObserver(this);
193 dbList.observeForever(observer);
197 public void setTestText(String text) {
198 List<TemplateDetailsItem> list = new ArrayList<>(items.getValue());
199 TemplateDetailsItem.Header header = new TemplateDetailsItem.Header(list.get(0)
201 header.setTestText(text);
204 items.setValue(list);
206 public void onSaveTemplate() {
207 Logger.debug("flow", "PatternDetailsViewModel.onSavePattern(); model=" + this);
208 final List<TemplateDetailsItem> list = Objects.requireNonNull(items.getValue());
210 AsyncTask.execute(() -> {
211 boolean newPattern = mPatternId == null || mPatternId <= 0;
213 TemplateDetailsItem.Header modelHeader = list.get(0)
215 TemplateHeaderDAO headerDAO = DB.get()
217 TemplateHeader dbHeader = modelHeader.toDBO();
219 dbHeader.setId(null);
220 dbHeader.setId(mPatternId = headerDAO.insertSync(dbHeader));
223 headerDAO.updateSync(dbHeader);
225 Logger.debug("pattern-db",
226 String.format(Locale.US, "Stored pattern header %d, item=%s", dbHeader.getId(),
230 TemplateAccountDAO taDAO = DB.get()
231 .getTemplateAccountDAO();
232 taDAO.prepareForSave(mPatternId);
233 for (int i = 1; i < list.size(); i++) {
234 final TemplateDetailsItem.AccountRow accRowItem = list.get(i)
236 TemplateAccount dbAccount = accRowItem.toDBO(dbHeader.getId());
237 dbAccount.setTemplateId(mPatternId);
238 dbAccount.setPosition(i);
239 if (dbAccount.getId() < 0) {
240 dbAccount.setId(null);
241 dbAccount.setId(taDAO.insertSync(dbAccount));
244 taDAO.updateSync(dbAccount);
246 Logger.debug("pattern-db", String.format(Locale.US,
247 "Stored pattern account %d, account=%s, comment=%s, neg=%s, item=%s",
248 dbAccount.getId(), dbAccount.getAccountName(),
249 dbAccount.getAccountComment(), dbAccount.getNegateAmount(), accRowItem));
251 taDAO.finishSave(mPatternId);
254 private ArrayList<TemplateDetailsItem> copyItems() {
255 List<TemplateDetailsItem> oldList = items.getValue();
256 ArrayList<TemplateDetailsItem> result = new ArrayList<>(oldList.size());
258 for (TemplateDetailsItem item : oldList) {
259 if (item instanceof TemplateDetailsItem.Header)
260 result.add(new TemplateDetailsItem.Header(item.asHeaderItem()));
261 else if (item instanceof TemplateDetailsItem.AccountRow)
262 result.add(new TemplateDetailsItem.AccountRow(item.asAccountRowItem()));
264 throw new RuntimeException("Unexpected item " + item);
269 public void moveItem(int sourcePos, int targetPos) {
270 final List<TemplateDetailsItem> newList = copyItems();
272 if (BuildConfig.DEBUG) {
273 Logger.debug("drag", "Before move:");
274 for (int i = 1; i < newList.size(); i++) {
275 final TemplateDetailsItem item = newList.get(i);
277 String.format(Locale.US, " %d: id %d, pos %d", i, item.getId(),
278 item.getPosition()));
283 TemplateDetailsItem item = newList.remove(sourcePos);
284 newList.add(targetPos, item);
287 // adjust affected items' positions
289 int startPos, endPos;
290 if (sourcePos < targetPos) {
292 startPos = sourcePos;
297 startPos = targetPos;
301 for (int i = startPos; i <= endPos; i++) {
307 if (BuildConfig.DEBUG) {
308 Logger.debug("drag", "After move:");
309 for (int i = 1; i < newList.size(); i++) {
310 final TemplateDetailsItem item = newList.get(i);
312 String.format(Locale.US, " %d: id %d, pos %d", i, item.getId(),
313 item.getPosition()));
317 items.setValue(newList);
319 public void removeItem(int position) {
320 Logger.debug("tmpl", "Removing item at position " + position);
321 ArrayList<TemplateDetailsItem> newList = copyItems();
322 newList.remove(position);
323 for (int i = position; i < newList.size(); i++)