import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModel;
+import net.ktnx.mobileledger.BuildConfig;
import net.ktnx.mobileledger.dao.TemplateAccountDAO;
import net.ktnx.mobileledger.dao.TemplateHeaderDAO;
import net.ktnx.mobileledger.db.DB;
import java.util.List;
import java.util.Locale;
import java.util.Objects;
+import java.util.concurrent.atomic.AtomicInteger;
public class TemplateDetailsViewModel extends ViewModel {
private final MutableLiveData<List<TemplateDetailsItem>> items =
new MutableLiveData<>(Collections.emptyList());
private Long mPatternId;
private String mDefaultPatternName;
+ private boolean itemsLoaded = false;
+ private final AtomicInteger syntheticItemId = new AtomicInteger(0);
public String getDefaultPatternName() {
return mDefaultPatternName;
}
public void resetItems() {
- ArrayList<TemplateDetailsItem> newList = new ArrayList<>();
- final TemplateDetailsItem.Header header = TemplateDetailsItem.createHeader();
- header.setName(mDefaultPatternName);
- header.setId(0);
- newList.add(header);
+ applyList(new ArrayList<>());
+ }
+ public void applyList(List<TemplateDetailsItem> srcList) {
+ applyList(srcList, false);
+ }
+ public void applyList(List<TemplateDetailsItem> srcList, boolean async) {
+ boolean changes;
+ if (srcList == null) {
+ srcList = new ArrayList<>(items.getValue());
+ changes = false;
+ }
+ else
+ changes = true;
- while (newList.size() < 3) {
- final TemplateDetailsItem.AccountRow aRow = TemplateDetailsItem.createAccountRow();
- aRow.setId(newList.size() + 1);
- newList.add(aRow);
+ srcList = Collections.unmodifiableList(srcList);
+
+ {
+ Logger.debug("tmpl", "Considering old list");
+ for (TemplateDetailsItem item : srcList)
+ Logger.debug("tmpl", String.format(Locale.US, " id %d pos %d", item.getId(),
+ item.getPosition()));
}
- items.setValue(newList);
- }
- private void checkItemConsistency() {
- ArrayList<TemplateDetailsItem> newList = new ArrayList<>(items.getValue());
- boolean changes = false;
- if (newList.size() < 1) {
+ ArrayList<TemplateDetailsItem> newList = new ArrayList<>();
+
+ boolean hasEmptyItem = false;
+
+ if (srcList.size() < 1) {
final TemplateDetailsItem.Header header = TemplateDetailsItem.createHeader();
header.setName(mDefaultPatternName);
+ header.setId(0);
newList.add(header);
changes = true;
}
+ else {
+ newList.add(srcList.get(0));
+ }
+
+ for (int i = 1; i < srcList.size(); i++) {
+ final TemplateDetailsItem.AccountRow accRow = srcList.get(i)
+ .asAccountRowItem();
+ if (accRow.isEmpty()) {
+ // it is normal to have two empty rows if they are at the
+ // top (position 1 and 2)
+ if (!hasEmptyItem || i < 3) {
+ accRow.setPosition(newList.size());
+ newList.add(accRow);
+ }
+ else
+ changes = true; // row skipped
+
+ hasEmptyItem = true;
+ }
+ else {
+ accRow.setPosition(newList.size());
+ newList.add(accRow);
+ }
+ }
while (newList.size() < 3) {
- newList.add(TemplateDetailsItem.createAccountRow());
+ final TemplateDetailsItem.AccountRow accountRow =
+ TemplateDetailsItem.createAccountRow();
+ accountRow.setId(genItemId());
+ accountRow.setPosition(newList.size());
+ newList.add(accountRow);
changes = true;
+ hasEmptyItem = true;
}
- if (changes)
- items.setValue(newList);
+ if (!hasEmptyItem) {
+ final TemplateDetailsItem.AccountRow accountRow =
+ TemplateDetailsItem.createAccountRow();
+ accountRow.setId(genItemId());
+ accountRow.setPosition(newList.size());
+ newList.add(accountRow);
+ changes = true;
+ }
+
+ if (changes) {
+ Logger.debug("tmpl", "Changes detected, applying new list");
+
+ if (async)
+ items.postValue(newList);
+ else
+ items.setValue(newList);
+ }
+ else
+ Logger.debug("tmpl", "No changes, ignoring new list");
+ }
+ public int genItemId() {
+ return syntheticItemId.decrementAndGet();
}
public LiveData<List<TemplateDetailsItem>> getItems(Long patternId) {
+ if (itemsLoaded && Objects.equals(patternId, this.mPatternId))
+ return items;
+
if (patternId != null && patternId <= 0)
throw new IllegalArgumentException("Pattern ID " + patternId + " is invalid");
if (mPatternId == null) {
resetItems();
+ itemsLoaded = true;
return items;
}
TemplateDetailsItem header = TemplateDetailsItem.fromRoomObject(src.header);
l.add(header);
+ Collections.sort(src.accounts,
+ (o1, o2) -> Long.compare(o1.getPosition(), o2.getPosition()));
for (TemplateAccount acc : src.accounts) {
l.add(TemplateDetailsItem.fromRoomObject(acc));
}
for (TemplateDetailsItem i : l) {
Logger.debug("patterns-db", "Loaded pattern item " + i);
}
- items.postValue(l);
+ applyList(l, true);
+ itemsLoaded = true;
dbList.removeObserver(this);
}
TemplateAccountDAO taDAO = DB.get()
.getTemplateAccountDAO();
+ taDAO.prepareForSave(mPatternId);
for (int i = 1; i < list.size(); i++) {
final TemplateDetailsItem.AccountRow accRowItem = list.get(i)
.asAccountRowItem();
TemplateAccount dbAccount = accRowItem.toDBO(dbHeader.getId());
dbAccount.setTemplateId(mPatternId);
dbAccount.setPosition(i);
- if (newPattern) {
+ if (dbAccount.getId() < 0) {
dbAccount.setId(null);
dbAccount.setId(taDAO.insertSync(dbAccount));
}
dbAccount.getId(), dbAccount.getAccountName(),
dbAccount.getAccountComment(), dbAccount.getNegateAmount(), accRowItem));
}
+ taDAO.finishSave(mPatternId);
});
}
+ private ArrayList<TemplateDetailsItem> copyItems() {
+ List<TemplateDetailsItem> oldList = items.getValue();
+ ArrayList<TemplateDetailsItem> result = new ArrayList<>(oldList.size());
+
+ for (TemplateDetailsItem item : oldList) {
+ if (item instanceof TemplateDetailsItem.Header)
+ result.add(new TemplateDetailsItem.Header(item.asHeaderItem()));
+ else if (item instanceof TemplateDetailsItem.AccountRow)
+ result.add(new TemplateDetailsItem.AccountRow(item.asAccountRowItem()));
+ else
+ throw new RuntimeException("Unexpected item " + item);
+ }
+
+ return result;
+ }
+ public void moveItem(int sourcePos, int targetPos) {
+ final List<TemplateDetailsItem> newList = copyItems();
+
+ if (BuildConfig.DEBUG) {
+ Logger.debug("drag", "Before move:");
+ for (int i = 1; i < newList.size(); i++) {
+ final TemplateDetailsItem item = newList.get(i);
+ Logger.debug("drag",
+ String.format(Locale.US, " %d: id %d, pos %d", i, item.getId(),
+ item.getPosition()));
+ }
+ }
+
+ {
+ TemplateDetailsItem item = newList.remove(sourcePos);
+ newList.add(targetPos, item);
+ }
+
+ // adjust affected items' positions
+ {
+ int startPos, endPos;
+ if (sourcePos < targetPos) {
+ // moved down
+ startPos = sourcePos;
+ endPos = targetPos;
+ }
+ else {
+ // moved up
+ startPos = targetPos;
+ endPos = sourcePos;
+ }
+
+ for (int i = startPos; i <= endPos; i++) {
+ newList.get(i)
+ .setPosition(i);
+ }
+ }
+
+ if (BuildConfig.DEBUG) {
+ Logger.debug("drag", "After move:");
+ for (int i = 1; i < newList.size(); i++) {
+ final TemplateDetailsItem item = newList.get(i);
+ Logger.debug("drag",
+ String.format(Locale.US, " %d: id %d, pos %d", i, item.getId(),
+ item.getPosition()));
+ }
+ }
+
+ items.setValue(newList);
+ }
+ public void removeItem(int position) {
+ Logger.debug("tmpl", "Removing item at position " + position);
+ ArrayList<TemplateDetailsItem> newList = copyItems();
+ newList.remove(position);
+ for (int i = position; i < newList.size(); i++)
+ newList.get(i)
+ .setPosition(i);
+ applyList(newList);
+ }
}
\ No newline at end of file
projects / mobile-ledger.git / blobdiff