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GeezerVison is showing github.com — sqlitebrowser/src/sqlitetablemodel.cpp at master · optionalg/sqlitebrowser Expand file tree/ Copy pathsqlitetablemodel.cppMore file actions 746 lines (650 loc) · 23.9 KB / Copy pathsqlitetablemodel.cppFile metadata and controls746 lines (650 loc) · 23.9 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 #include "sqlitetablemodel.h" #include "sqlitedb.h" #include "sqlite.h" #include "Settings.h" #include <QDebug> #include <QMessageBox> #include <QApplication> #include <QTextCodec> #include <QMimeData> #include <QFile> #include <QUrl> SqliteTableModel::SqliteTableModel(DBBrowserDB& db, QObject* parent, size_t chunkSize, const QString& encoding) : QAbstractTableModel(parent) , m_db(db) , m_rowCount(0) , m_chunkSize(chunkSize) , m_valid(false) , m_encoding(encoding) { reset(); } void SqliteTableModel::reset() { m_iSortColumn = 0; m_sSortOrder = "ASC"; m_headers.clear(); m_mWhere.clear(); m_vDataTypes.clear(); m_vDisplayFormat.clear(); } void SqliteTableModel::setChunkSize(size_t chunksize) { m_chunkSize = chunksize; } void SqliteTableModel::setTable(const QString& table, const QVector<QString>& display_format) { reset(); m_sTable = table; m_vDisplayFormat = display_format; m_vDataTypes.push_back(SQLITE_INTEGER); bool allOk = false; if(m_db.getObjectByName(table)->type() == sqlb::Object::Types::Table) { sqlb::TablePtr t = m_db.getObjectByName(table).dynamicCast<sqlb::Table>(); if(t && t->fields().size()) // parsing was OK { m_headers.push_back(t->rowidColumn()); m_headers.append(t->fieldNames()); // parse columns types static QStringList dataTypes = QStringList() << "INTEGER" << "REAL" << "TEXT" << "BLOB"; foreach(const sqlb::FieldPtr fld, t->fields()) { QString name(fld->type().toUpper()); int colType = dataTypes.indexOf(name); colType = (colType == -1) ? SQLITE_TEXT : colType + 1; m_vDataTypes.push_back(colType); } allOk = true; } } if(!allOk) { QString sColumnQuery = QString::fromUtf8("SELECT * FROM %1;").arg(sqlb::escapeIdentifier(table)); m_headers.push_back("rowid"); m_headers.append(getColumns(sColumnQuery, m_vDataTypes)); } buildQuery(); } namespace { QString rtrimChar(const QString& s, QChar c) { QString r = s.trimmed(); while(r.endsWith(c)) r.chop(1); return r; } } void SqliteTableModel::setQuery(const QString& sQuery, bool dontClearHeaders) { // clear if(!dontClearHeaders) reset(); if(!m_db.isOpen()) return; m_sQuery = sQuery.trimmed(); removeCommentsFromQuery(m_sQuery); // do a count query to get the full row count in a fast manner m_rowCount = getQueryRowCount(); if(m_rowCount == -1) { m_valid = false; return; } // headers if(!dontClearHeaders) { m_headers.append(getColumns(sQuery, m_vDataTypes)); } // now fetch the first entries clearCache(); fetchData(0, m_chunkSize); m_valid = true; emit layoutChanged(); } int SqliteTableModel::getQueryRowCount() { // Return -1 if there is an error int retval = -1; // Use a different approach of determining the row count when a EXPLAIN or a PRAGMA statement is used because a COUNT fails on these queries if(m_sQuery.startsWith("EXPLAIN", Qt::CaseInsensitive) || m_sQuery.startsWith("PRAGMA", Qt::CaseInsensitive)) { // So just execute the statement as it is and fetch all results counting the rows sqlite3_stmt* stmt; QByteArray utf8Query = m_sQuery.toUtf8(); if(sqlite3_prepare_v2(m_db._db, utf8Query, utf8Query.size(), &stmt, NULL) == SQLITE_OK) { retval = 0; while(sqlite3_step(stmt) == SQLITE_ROW) retval++; sqlite3_finalize(stmt); // Return the results but also set the chunk size the number of rows to prevent the lazy population mechanism to kick in as using LIMIT // fails on this kind of queries as well m_chunkSize = retval; return retval; } } else { // If it is a normal query - hopefully starting with SELECT - just do a COUNT on it and return the results QString sCountQuery = QString("SELECT COUNT(*) FROM (%1);").arg(rtrimChar(m_sQuery, ';')); m_db.logSQL(sCountQuery, kLogMsg_App); QByteArray utf8Query = sCountQuery.toUtf8(); sqlite3_stmt* stmt; int status = sqlite3_prepare_v2(m_db._db, utf8Query, utf8Query.size(), &stmt, NULL); if(status == SQLITE_OK) { status = sqlite3_step(stmt); if(status == SQLITE_ROW) { QString sCount = QString::fromUtf8((const char*)sqlite3_column_text(stmt, 0)); retval = sCount.toInt(); } sqlite3_finalize(stmt); } else { qWarning() << "Count query failed: " << sCountQuery; } } return retval; } int SqliteTableModel::rowCount(const QModelIndex&) const { return m_data.size(); // current fetched row count } int SqliteTableModel::totalRowCount() const { return m_rowCount; } int SqliteTableModel::columnCount(const QModelIndex&) const { return m_headers.size(); } QVariant SqliteTableModel::headerData(int section, Qt::Orientation orientation, int role) const { if (role != Qt::DisplayRole) return QVariant(); if (orientation == Qt::Horizontal) { // if we have a VIRTUAL table the model will not be valid, with no header data if(section < m_headers.size()) return m_headers.at(section); return QString("%1").arg(section + 1); } else return QString("%1").arg(section + 1); } QVariant SqliteTableModel::data(const QModelIndex &index, int role) const { if (!index.isValid()) return QVariant(); if (index.row() >= m_rowCount) return QVariant(); if(role == Qt::DisplayRole || role == Qt::EditRole) { // If this row is not in the cache yet get it first while(index.row() >= m_data.size() && canFetchMore()) const_cast<SqliteTableModel*>(this)->fetchMore(); // Nothing evil to see here, move along if(role == Qt::DisplayRole && m_data.at(index.row()).at(index.column()).isNull()) { return Settings::getSettingsValue("databrowser", "null_text").toString(); } else if(role == Qt::DisplayRole && isBinary(index)) { return "BLOB"; } else if(role == Qt::DisplayRole) { int limit = Settings::getSettingsValue("databrowser", "symbol_limit").toInt(); QByteArray displayText = m_data.at(index.row()).at(index.column()); if (displayText.length() > limit) { // Add "..." to the end of truncated strings return decode(displayText.left(limit).append(" ...")); } else { return decode(displayText); } } else { return decode(m_data.at(index.row()).at(index.column())); } } else if(role == Qt::FontRole) { QFont font; if(m_data.at(index.row()).at(index.column()).isNull() || isBinary(index)) font.setItalic(true); return font; } else if(role == Qt::ForegroundRole) { if(m_data.at(index.row()).at(index.column()).isNull()) return QColor(Settings::getSettingsValue("databrowser", "null_fg_colour").toString()); else if (isBinary(index)) return QColor(Settings::getSettingsValue("databrowser", "bin_fg_colour").toString()); return QColor(Settings::getSettingsValue("databrowser", "reg_fg_colour").toString()); } else if (role == Qt::BackgroundRole) { if(m_data.at(index.row()).at(index.column()).isNull()) return QColor(Settings::getSettingsValue("databrowser", "null_bg_colour").toString()); else if (isBinary(index)) return QColor(Settings::getSettingsValue("databrowser", "bin_bg_colour").toString()); return QColor(Settings::getSettingsValue("databrowser", "reg_bg_colour").toString()); } else if(role == Qt::ToolTipRole) { sqlb::ForeignKeyClause fk = getForeignKeyClause(index.column()-1); if(fk.isSet()) return tr("References %1(%2)\nHold Ctrl+Shift and click to jump there").arg(fk.table()).arg(fk.columns().join(",")); else return QString(); } else { return QVariant(); } } sqlb::ForeignKeyClause SqliteTableModel::getForeignKeyClause(int column) const { static const sqlb::ForeignKeyClause empty_foreign_key_clause; if (m_sTable.isEmpty()) return empty_foreign_key_clause; sqlb::TablePtr obj = m_db.getObjectByName(m_sTable).dynamicCast<sqlb::Table>(); if(obj->name().size() && (column >= 0 && column < obj->fields().count())) { // Note that the rowid column has number -1 here, it can safely be excluded since there will never be a // foreign key on that column. sqlb::ConstraintPtr ptr = obj->constraint({obj->fields().at(column)}, sqlb::Constraint::ForeignKeyConstraintType); if(ptr) return *(ptr.dynamicCast<sqlb::ForeignKeyClause>()); } return empty_foreign_key_clause; } bool SqliteTableModel::setData(const QModelIndex& index, const QVariant& value, int role) { // This function is for in-place editing. // So, BLOB flag is false every times. return setTypedData(index, false, value, role); } bool SqliteTableModel::setTypedData(const QModelIndex& index, bool isBlob, const QVariant& value, int role) { if(index.isValid() && role == Qt::EditRole) { QByteArray newValue = encode(value.toByteArray()); QByteArray oldValue = m_data.at(index.row()).at(index.column()); // Special handling for integer columns: instead of setting an integer column to an empty string, set it to '0' when it is also // used in a primary key. Otherwise SQLite will always output an 'datatype mismatch' error. if(newValue == "" && !newValue.isNull()) { sqlb::TablePtr table = m_db.getObjectByName(m_sTable).dynamicCast<sqlb::Table>(); if(table) { sqlb::FieldPtr field = table->field(table->findField(m_headers.at(index.column()))); if(table->primaryKey().contains(field) && field->isInteger()) newValue = "0"; } } // Don't do anything if the data hasn't changed // To differentiate NULL and empty byte arrays, we also compare the NULL flag if(oldValue == newValue && oldValue.isNull() == newValue.isNull()) return true; if(m_db.updateRecord(m_sTable, m_headers.at(index.column()), m_data[index.row()].at(0), newValue, isBlob)) { // Only update the cache if this row has already been read, if not there's no need to do any changes to the cache if(index.row() < m_data.size()) m_data[index.row()].replace(index.column(), newValue); emit(dataChanged(index, index)); return true; } else { QMessageBox::warning(0, qApp->applicationName(), tr("Error changing data:\n%1").arg(m_db.lastError())); return false; } } return false; } bool SqliteTableModel::canFetchMore(const QModelIndex&) const { return m_data.size() < m_rowCount; } void SqliteTableModel::fetchMore(const QModelIndex&) { int row = m_data.size(); fetchData(row, row + m_chunkSize); } Qt::ItemFlags SqliteTableModel::flags(const QModelIndex& index) const { if(!index.isValid()) return Qt::ItemIsEnabled; Qt::ItemFlags ret = QAbstractTableModel::flags(index) | Qt::ItemIsDropEnabled; // Custom display format set? bool custom_display_format = false; if(m_vDisplayFormat.size()) { // NOTE: This assumes that custom display formats never start and end with a backtick if(index.column() > 0) custom_display_format = !(m_vDisplayFormat.at(index.column()-1).startsWith("`") && m_vDisplayFormat.at(index.column()-1).endsWith("`")); } if(!isBinary(index) && !custom_display_format) ret |= Qt::ItemIsEditable; return ret; } void SqliteTableModel::sort(int column, Qt::SortOrder order) { // Don't do anything when the sort order hasn't changed if(m_iSortColumn == column && m_sSortOrder == (order == Qt::AscendingOrder ? "ASC" : "DESC")) return; // Save sort order if (column >= 0 && column < m_headers.size()) m_iSortColumn = column; m_sSortOrder = (order == Qt::AscendingOrder ? "ASC" : "DESC"); // Set the new query (but only if a table has already been set if(m_sTable != "") buildQuery(); } bool SqliteTableModel::insertRows(int row, int count, const QModelIndex& parent) { QByteArrayList blank_data; for(int i=0; i < m_headers.size(); ++i) blank_data.push_back(""); DataType tempList; for(int i=row; i < row + count; ++i) { QString rowid = m_db.addRecord(m_sTable); if(rowid.isNull()) { return false; } m_rowCount++; tempList.append(blank_data); tempList[i - row].replace(0, rowid.toUtf8()); // update column with default values QByteArrayList rowdata; if( m_db.getRow(m_sTable, rowid, rowdata) ) { for(int j=1; j < m_headers.size(); ++j) { tempList[i - row].replace(j, rowdata[j - 1]); } } } beginInsertRows(parent, row, row + count - 1); for(int i = 0; i < tempList.size(); ++i) { m_data.insert(i + row, tempList.at(i)); } endInsertRows(); return true; } bool SqliteTableModel::removeRows(int row, int count, const QModelIndex& parent) { beginRemoveRows(parent, row, row + count - 1); bool ok = true; QStringList rowids; for(int i=count-1;i>=0;i--) { rowids.append(m_data.at(row + i).at(0)); m_data.removeAt(row + i); --m_rowCount; } if(!m_db.deleteRecords(m_sTable, rowids)) { ok = false; } endRemoveRows(); return ok; } QModelIndex SqliteTableModel::dittoRecord(int old_row) { insertRow(rowCount()); int firstEditedColumn = 0; int new_row = rowCount() - 1; sqlb::TablePtr t = m_db.getObjectByName(m_sTable).dynamicCast<sqlb::Table>(); sqlb::FieldVector pk = t->primaryKey(); for (int col = 0; col < t->fields().size(); ++col) { if(!pk.contains(t->fields().at(col))) { if (!firstEditedColumn) firstEditedColumn = col + 1; QVariant value = data(index(old_row, col + 1), Qt::EditRole); setData(index(new_row, col + 1), value); } } return index(new_row, firstEditedColumn); } void SqliteTableModel::fetchData(unsigned int from, unsigned to) { int currentsize = m_data.size(); QString sLimitQuery; if(m_sQuery.startsWith("PRAGMA", Qt::CaseInsensitive) || m_sQuery.startsWith("EXPLAIN", Qt::CaseInsensitive)) { sLimitQuery = m_sQuery; } else { // Remove trailing trailing semicolon QString queryTemp = rtrimChar(m_sQuery, ';'); // If the query ends with a LIMIT statement take it as it is, if not append our own LIMIT part for lazy population if(queryTemp.contains(QRegExp("LIMIT\\s+.+\\s*((,|\\b(OFFSET)\\b)\\s*.+\\s*)?$", Qt::CaseInsensitive))) sLimitQuery = queryTemp; else sLimitQuery = queryTemp + QString(" LIMIT %1, %2;").arg(from).arg(to-from); } m_db.logSQL(sLimitQuery, kLogMsg_App); QByteArray utf8Query = sLimitQuery.toUtf8(); sqlite3_stmt *stmt; int status = sqlite3_prepare_v2(m_db._db, utf8Query, utf8Query.size(), &stmt, NULL); if(SQLITE_OK == status) { while(sqlite3_step(stmt) == SQLITE_ROW) { QByteArrayList rowdata; for (int i = 0; i < m_headers.size(); ++i) { if(sqlite3_column_type(stmt, i) == SQLITE_NULL) { rowdata.append(QByteArray()); } else { int bytes = sqlite3_column_bytes(stmt, i); if(bytes) rowdata.append(QByteArray(static_cast<const char*>(sqlite3_column_blob(stmt, i)), bytes)); else rowdata.append(QByteArray("")); } } m_data.push_back(rowdata); } } sqlite3_finalize(stmt); // Check if there was any new data if(m_data.size() > currentsize) { beginInsertRows(QModelIndex(), currentsize, m_data.size()-1); endInsertRows(); } } void SqliteTableModel::buildQuery() { QString where; if(m_mWhere.size()) { where = "WHERE "; for(QMap<int, QString>::const_iterator i=m_mWhere.constBegin();i!=m_mWhere.constEnd();++i) { QString column; if(m_vDisplayFormat.size()) column = QString("col%1").arg(i.key()); else column = m_headers.at(i.key()); where.append(QString("%1 %2 AND ").arg(sqlb::escapeIdentifier(column)).arg(i.value())); } // Remove last 'AND ' where.chop(4); } QString selector; if(m_vDisplayFormat.empty()) { selector = "*"; } else { for(int i=0;i<m_vDisplayFormat.size();i++) selector += m_vDisplayFormat.at(i) + " AS " + QString("col%1").arg(i+1) + ","; selector.chop(1); } // Note: Building the SQL string is intentionally split into several parts here instead of arg()'ing it all together as one. // The reason is that we're adding '%' characters automatically around search terms (and even if we didn't the user could add // them manually) which means that e.g. searching for '1' results in another '%1' in the string which then totally confuses // the QString::arg() function, resulting in an invalid SQL. QString sql = QString("SELECT %1,%2 FROM %3 ") .arg(sqlb::escapeIdentifier(m_headers.at(0))) .arg(selector) .arg(sqlb::escapeIdentifier(m_sTable)) + where + QString("ORDER BY %1 %2") .arg(sqlb::escapeIdentifier(m_headers.at(m_iSortColumn))) .arg(m_sSortOrder); setQuery(sql, true); } void SqliteTableModel::removeCommentsFromQuery(QString& query) { query.remove(QRegExp("\\s*--[^\\n]+")); } QStringList SqliteTableModel::getColumns(const QString& sQuery, QVector<int>& fieldsTypes) { sqlite3_stmt* stmt; QByteArray utf8Query = sQuery.toUtf8(); int status = sqlite3_prepare_v2(m_db._db, utf8Query, utf8Query.size(), &stmt, NULL); QStringList listColumns; if(SQLITE_OK == status) { sqlite3_step(stmt); int columns = sqlite3_data_count(stmt); for(int i = 0; i < columns; ++i) { listColumns.append(QString::fromUtf8((const char*)sqlite3_column_name(stmt, i))); fieldsTypes.push_back(sqlite3_column_type(stmt, i)); } } sqlite3_finalize(stmt); return listColumns; } void SqliteTableModel::updateFilter(int column, const QString& value) { // Check for any special comparison operators at the beginning of the value string. If there are none default to LIKE. QString op = "LIKE"; QString val, val2; QString escape; bool numeric = false, ok = false; // range/BETWEEN operator if (value.contains("~")) { int sepIdx = value.indexOf('~'); val = value.mid(0, sepIdx); val2 = value.mid(sepIdx+1); val.toFloat(&ok); if (ok) { val2.toFloat(&ok); ok = ok && (val.toFloat() < val2.toFloat()); } } if (ok) { op = "BETWEEN"; numeric = true; } else { val.clear(); val2.clear(); if(value.left(2) == ">=" || value.left(2) == "<=" || value.left(2) == "<>") { bool ok; value.mid(2).toFloat(&ok); if(ok) { op = value.left(2); val = value.mid(2); numeric = true; } } else if(value.left(1) == ">" || value.left(1) == "<") { bool ok; value.mid(1).toFloat(&ok); if(ok) { op = value.left(1); val = value.mid(1); numeric = true; } } else if(value.left(1) == "=") { val = value.mid(1); // Check if value to compare with is 'NULL' if(val != "NULL") { // It's not, so just compare normally to the value, whatever it is. op = "="; } else { // It is NULL. Override the comparison operator to search for NULL values in this column. Also treat search value (NULL) as number, // in order to avoid putting quotes around it. op = "IS"; numeric = true; } } else { // Keep the default LIKE operator // Set the escape character if one has been specified in the settings dialog QString escape_character = Settings::getSettingsValue("databrowser", "filter_escape").toString(); if(escape_character == "'") escape_character = "''"; if(escape_character.length()) escape = QString("ESCAPE '%1'").arg(escape_character); // Add % wildcards at the start and at the beginning of the filter query, but only if there weren't set any // wildcards manually. The idea is to assume that a user who's just typing characters expects the wildcards to // be added but a user who adds them herself knows what she's doing and doesn't want us to mess up her query. if(!value.contains("%")) { val = value; val.prepend('%'); val.append('%'); } } } if(val.isEmpty()) val = value; if(!numeric) val = QString("'%1'").arg(val.replace("'", "''")); // If the value was set to an empty string remove any filter for this column. Otherwise insert a new filter rule or replace the old one if there is already one if(val == "''" || val == "'%'" || val == "'%%'") m_mWhere.remove(column); else { QString whereClause(op + " " + QString(encode(val.toUtf8()))); if (!val2.isEmpty()) whereClause += " AND " + QString(encode(val2.toUtf8())); whereClause += " " + escape; m_mWhere.insert(column, whereClause); } // Build the new query buildQuery(); } void SqliteTableModel::clearCache() { if(!m_data.empty()) { beginRemoveRows(QModelIndex(), 0, m_data.size() - 1); m_data.clear(); endRemoveRows(); } } bool SqliteTableModel::isBinary(const QModelIndex& index) const { return m_data.at(index.row()).at(index.column()).left(1024).contains('\0'); } QByteArray SqliteTableModel::encode(const QByteArray& str) const { if(m_encoding.isEmpty()) return str; else return QTextCodec::codecForName(m_encoding.toUtf8())->fromUnicode(str); } QByteArray SqliteTableModel::decode(const QByteArray& str) const { if(m_encoding.isEmpty()) return str; else return QTextCodec::codecForName(m_encoding.toUtf8())->toUnicode(str).toUtf8(); } Qt::DropActions SqliteTableModel::supportedDropActions() const { return Qt::CopyAction; } bool SqliteTableModel::dropMimeData(const QMimeData* data, Qt::DropAction, int row, int column, const QModelIndex& parent) { // What has been dropped on the widget? if(data->hasUrls()) { // If it's a URL, open the file and paste the content in the current cell QList<QUrl> urls = data->urls(); QFile file(urls.first().toLocalFile()); if(file.exists() && file.open(QFile::ReadOnly)) { setData(index(row, column, parent), file.readAll()); return true; } } else if(data->hasText()) { // If it's just text we can set the cell data directly setData(index(row, column, parent), data->text()); } return false; } |
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