projectmodels.cpp 25.2 KB
Newer Older
1
/**************************************************************************
con's avatar
con committed
2 3 4
**
** This file is part of Qt Creator
**
hjk's avatar
hjk committed
5
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
con's avatar
con committed
6
**
7
** Contact: Nokia Corporation (qt-info@nokia.com)
con's avatar
con committed
8
**
9
** Commercial Usage
10
**
11 12 13 14
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
15
**
16
** GNU Lesser General Public License Usage
17
**
18 19 20 21 22 23
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24
**
25
** If you are unsure which license is appropriate for your use, please
hjk's avatar
hjk committed
26
** contact the sales department at http://qt.nokia.com/contact.
con's avatar
con committed
27
**
28
**************************************************************************/
hjk's avatar
hjk committed
29

con's avatar
con committed
30
#include "projectmodels.h"
hjk's avatar
hjk committed
31 32

#include "project.h"
con's avatar
con committed
33
#include "projectexplorerconstants.h"
34
#include "projectnodes.h"
dt's avatar
dt committed
35
#include "projectexplorer.h"
con's avatar
con committed
36 37

#include <coreplugin/fileiconprovider.h>
hjk's avatar
hjk committed
38 39 40 41
#include <utils/qtcassert.h>

#include <QtCore/QDebug>
#include <QtCore/QFileInfo>
con's avatar
con committed
42

43
#include <QtGui/QFont>
con's avatar
con committed
44 45 46 47 48 49 50
#include <QtGui/QIcon>

using namespace ProjectExplorer;
using namespace ProjectExplorer::Internal;
using Core::FileIconProvider;

namespace {
hjk's avatar
hjk committed
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68

// sorting helper function
bool sortNodes(Node *n1, Node *n2)
{
    // Ordering is: project files, project, folder, file

    const NodeType n1Type = n1->nodeType();
    const NodeType n2Type = n2->nodeType();

    // project files
    FileNode *file1 = qobject_cast<FileNode*>(n1);
    FileNode *file2 = qobject_cast<FileNode*>(n2);
    if (file1 && file1->fileType() == ProjectFileType) {
        if (file2 && file2->fileType() == ProjectFileType) {
            const QString fileName1 = QFileInfo(file1->path()).fileName();
            const QString fileName2 = QFileInfo(file2->path()).fileName();

            if (fileName1 != fileName2)
dt's avatar
dt committed
69
                return fileName1.compare(fileName2, Qt::CaseInsensitive) < 0;
hjk's avatar
hjk committed
70 71
            else
                return file1 < file2;
con's avatar
con committed
72
        } else {
hjk's avatar
hjk committed
73 74 75 76 77
            return true; // project file is before everything else
        }
    } else {
        if (file2 && file2->fileType() == ProjectFileType) {
            return false;
con's avatar
con committed
78
        }
hjk's avatar
hjk committed
79
    }
con's avatar
con committed
80

hjk's avatar
hjk committed
81 82 83 84 85
    // projects
    if (n1Type == ProjectNodeType) {
        if (n2Type == ProjectNodeType) {
            ProjectNode *project1 = static_cast<ProjectNode*>(n1);
            ProjectNode *project2 = static_cast<ProjectNode*>(n2);
con's avatar
con committed
86

87
            if (project1->displayName() != project2->displayName())
dt's avatar
dt committed
88
                return project1->displayName().compare(project2->displayName(), Qt::CaseInsensitive) < 0; // sort by name
hjk's avatar
hjk committed
89 90 91 92 93 94 95 96
            else
                return project1 < project2; // sort by pointer value
        } else {
           return true; // project is before folder & file
       }
    }
    if (n2Type == ProjectNodeType)
        return false;
con's avatar
con committed
97

hjk's avatar
hjk committed
98 99 100 101
    if (n1Type == FolderNodeType) {
        if (n2Type == FolderNodeType) {
            FolderNode *folder1 = static_cast<FolderNode*>(n1);
            FolderNode *folder2 = static_cast<FolderNode*>(n2);
con's avatar
con committed
102

103 104
            if (folder1->path() != folder2->path())
                return folder1->path().compare(folder2->path(), Qt::CaseInsensitive) < 0;
hjk's avatar
hjk committed
105 106 107 108
            else
                return folder1 < folder2;
        } else {
            return true; // folder is before file
con's avatar
con committed
109
        }
hjk's avatar
hjk committed
110 111 112
    }
    if (n2Type == FolderNodeType)
        return false;
con's avatar
con committed
113

hjk's avatar
hjk committed
114 115 116 117
    // must be file nodes
    {
        const QString filePath1 = n1->path();
        const QString filePath2 = n2->path();
con's avatar
con committed
118

hjk's avatar
hjk committed
119 120
        const QString fileName1 = QFileInfo(filePath1).fileName();
        const QString fileName2 = QFileInfo(filePath2).fileName();
con's avatar
con committed
121

hjk's avatar
hjk committed
122
        if (fileName1 != fileName2) {
dt's avatar
dt committed
123
            return fileName1.compare(fileName2, Qt::CaseInsensitive) < 0; // sort by file names
hjk's avatar
hjk committed
124 125
        } else {
            if (filePath1 != filePath2) {
dt's avatar
dt committed
126
                return filePath1.compare(filePath2, Qt::CaseInsensitive) < 0; // sort by path names
con's avatar
con committed
127
            } else {
hjk's avatar
hjk committed
128
                return n1 < n2; // sort by pointer value
con's avatar
con committed
129 130 131
            }
        }
    }
hjk's avatar
hjk committed
132
    return false;
con's avatar
con committed
133 134
}

hjk's avatar
hjk committed
135 136
} // namespace anon

con's avatar
con committed
137 138
FlatModel::FlatModel(SessionNode *rootNode, QObject *parent)
        : QAbstractItemModel(parent),
139
          m_filterProjects(false),
con's avatar
con committed
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
          m_filterGeneratedFiles(true),
          m_rootNode(rootNode),
          m_startupProject(0),
          m_parentFolderForChange(0)
{
    NodesWatcher *watcher = new NodesWatcher(this);
    m_rootNode->registerWatcher(watcher);

    connect(watcher, SIGNAL(foldersAboutToBeAdded(FolderNode *, const QList<FolderNode*> &)),
            this, SLOT(foldersAboutToBeAdded(FolderNode *, const QList<FolderNode*> &)));
    connect(watcher, SIGNAL(foldersAdded()),
            this, SLOT(foldersAdded()));

    connect(watcher, SIGNAL(foldersAboutToBeRemoved(FolderNode *, const QList<FolderNode*> &)),
            this, SLOT(foldersAboutToBeRemoved(FolderNode *, const QList<FolderNode*> &)));
    connect(watcher, SIGNAL(foldersRemoved()),
            this, SLOT(foldersRemoved()));

    connect(watcher, SIGNAL(filesAboutToBeAdded(FolderNode *,const QList<FileNode*> &)),
            this, SLOT(filesAboutToBeAdded(FolderNode *, const QList<FileNode *> &)));
    connect(watcher, SIGNAL(filesAdded()),
            this, SLOT(filesAdded()));

    connect(watcher, SIGNAL(filesAboutToBeRemoved(FolderNode *, const QList<FileNode*> &)),
            this, SLOT(filesAboutToBeRemoved(FolderNode *, const QList<FileNode*> &)));
    connect(watcher, SIGNAL(filesRemoved()),
            this, SLOT(filesRemoved()));
}

QModelIndex FlatModel::index(int row, int column, const QModelIndex &parent) const
{
    QModelIndex result;
    if (!parent.isValid() && row == 0 && column == 0) { // session
        result = createIndex(0, 0, m_rootNode);
    } else if (parent.isValid() && column == 0) {
        FolderNode *parentNode = qobject_cast<FolderNode*>(nodeForIndex(parent));
dt's avatar
dt committed
176
        Q_ASSERT(parentNode);
con's avatar
con committed
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
        QHash<FolderNode*, QList<Node*> >::const_iterator it = m_childNodes.constFind(parentNode);
        if (it == m_childNodes.constEnd()) {
            fetchMore(parentNode);
            it = m_childNodes.constFind(parentNode);
        }

        if (row < it.value().size())
            result = createIndex(row, 0, it.value().at(row));
    }
//    qDebug() << "index of " << row << column << parent.data(Project::FilePathRole) << " is " << result.data(Project::FilePathRole);
    return result;
}

QModelIndex FlatModel::parent(const QModelIndex &idx) const
{
    QModelIndex parentIndex;
    if (Node *node = nodeForIndex(idx)) {
        FolderNode *parentNode = visibleFolderNode(node->parentFolderNode());
        if (parentNode) {
            FolderNode *grandParentNode = visibleFolderNode(parentNode->parentFolderNode());
            if (grandParentNode) {
                QHash<FolderNode*, QList<Node*> >::const_iterator it = m_childNodes.constFind(grandParentNode);
                if (it == m_childNodes.constEnd()) {
                    fetchMore(grandParentNode);
                    it = m_childNodes.constFind(grandParentNode);
                }
dt's avatar
dt committed
203
                Q_ASSERT(it != m_childNodes.constEnd());
con's avatar
con committed
204
                const int row = it.value().indexOf(parentNode);
dt's avatar
dt committed
205
                Q_ASSERT(row >= 0);
con's avatar
con committed
206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228
                parentIndex = createIndex(row, 0, parentNode);
            } else {
                // top level node, parent is session
                parentIndex = index(0, 0, QModelIndex());
            }
        }
    }

//    qDebug() << "parent of " << idx.data(Project::FilePathRole) << " is " << parentIndex.data(Project::FilePathRole);

    return parentIndex;
}

QVariant FlatModel::data(const QModelIndex &index, int role) const
{
    QVariant result;

    if (Node *node = nodeForIndex(index)) {
        FolderNode *folderNode = qobject_cast<FolderNode*>(node);
        switch (role) {
        case Qt::DisplayRole:
        case Qt::EditRole: {
            if (folderNode)
229
                result = folderNode->displayName();
con's avatar
con committed
230 231 232 233 234
            else
                result = QFileInfo(node->path()).fileName(); //TODO cache that?
            break;
        }
        case Qt::ToolTipRole: {
235
            result = QDir::toNativeSeparators(node->path());
con's avatar
con committed
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
            break;
        }
        case Qt::DecorationRole: {
            if (folderNode)
                result = folderNode->icon();
            else
                result = FileIconProvider::instance()->icon(QFileInfo(node->path()));
            break;
        }
        case Qt::FontRole: {
            QFont font;
            if (node == m_startupProject)
                font.setBold(true);
            result = font;
            break;
        }
        case ProjectExplorer::Project::FilePathRole: {
            result = node->path();
            break;
        }
        }
    }

    return result;
}

dt's avatar
dt committed
262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282
Qt::ItemFlags FlatModel::flags(const QModelIndex &index) const
{
    if (!index.isValid())
        return 0;
    // We claim that everything is editable
    // That's slightly wrong
    // We control the only view, and that one does the checks
    return Qt::ItemIsSelectable|Qt::ItemIsEnabled | Qt::ItemIsEditable;
}

bool FlatModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
    if (!index.isValid())
        return false;
    if (role != Qt::EditRole)
        return false;

    ProjectExplorerPlugin::instance()->renameFile(nodeForIndex(index), value.toString());
    return true;
}

con's avatar
con committed
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
int FlatModel::rowCount(const QModelIndex &parent) const
{
    int rows = 0;
    if (!parent.isValid()) {
        rows = 1;
    } else {
        FolderNode *folderNode = qobject_cast<FolderNode*>(nodeForIndex(parent));
        if (folderNode && m_childNodes.contains(folderNode))
            rows = m_childNodes.value(folderNode).size();
    }
    return rows;
}

int FlatModel::columnCount(const QModelIndex &/*parent*/) const
{
    return 1;
}

bool FlatModel::hasChildren(const QModelIndex &parent) const
{
    if (!parent.isValid())
        return true;

    FolderNode *folderNode = qobject_cast<FolderNode*>(nodeForIndex(parent));
    if (!folderNode)
        return false;

    QHash<FolderNode*, QList<Node*> >::const_iterator it = m_childNodes.constFind(folderNode);
    if (it == m_childNodes.constEnd()) {
        fetchMore(folderNode);
        it = m_childNodes.constFind(folderNode);
    }
    return !it.value().isEmpty();
}

bool FlatModel::canFetchMore(const QModelIndex & parent) const
{
    if (!parent.isValid()) {
        return false;
    } else {
        if (FolderNode *folderNode = qobject_cast<FolderNode*>(nodeForIndex(parent)))
            return !m_childNodes.contains(folderNode);
        else
            return false;
    }
}

void FlatModel::recursiveAddFolderNodes(FolderNode *startNode, QList<Node *> *list, const QSet<Node *> &blackList) const
{
    foreach (FolderNode *folderNode, startNode->subFolderNodes()) {
        if (folderNode && !blackList.contains(folderNode))
            recursiveAddFolderNodesImpl(folderNode, list, blackList);
    }
}

void FlatModel::recursiveAddFolderNodesImpl(FolderNode *startNode, QList<Node *> *list, const QSet<Node *> &blackList) const
{
    if (!filter(startNode)) {
        if (!blackList.contains(startNode))
            list->append(startNode);
    } else {
        foreach (FolderNode *folderNode, startNode->subFolderNodes()) {
            if (folderNode && !blackList.contains(folderNode))
                recursiveAddFolderNodesImpl(folderNode, list, blackList);
        }
    }
}

void FlatModel::recursiveAddFileNodes(FolderNode *startNode, QList<Node *> *list, const QSet<Node *> &blackList) const
{
    foreach (FolderNode *subFolderNode, startNode->subFolderNodes()) {
        if (!blackList.contains(subFolderNode))
            recursiveAddFileNodes(subFolderNode, list, blackList);
    }
    foreach (Node *node, startNode->fileNodes()) {
        if (!blackList.contains(node) && !filter(node))
            list->append(node);
    }
}

QList<Node*> FlatModel::childNodes(FolderNode *parentNode, const QSet<Node*> &blackList) const
{
    QList<Node*> nodeList;

    if (parentNode->nodeType() == SessionNodeType) {
        SessionNode *sessionNode = static_cast<SessionNode*>(parentNode);
        QList<ProjectNode*> projectList = sessionNode->projectNodes();
        for (int i = 0; i < projectList.size(); ++i) {
            if (!blackList.contains(projectList.at(i)))
                nodeList << projectList.at(i);
        }
    } else {
        recursiveAddFolderNodes(parentNode, &nodeList, blackList);
        recursiveAddFileNodes(parentNode, &nodeList, blackList + nodeList.toSet());
    }
    qSort(nodeList.begin(), nodeList.end(), sortNodes);
    return nodeList;
}

void FlatModel::fetchMore(FolderNode *folderNode) const
{
dt's avatar
dt committed
384 385
    Q_ASSERT(folderNode);
    Q_ASSERT(!m_childNodes.contains(folderNode));
con's avatar
con committed
386 387 388 389 390 391 392 393

    QList<Node*> nodeList = childNodes(folderNode);
    m_childNodes.insert(folderNode, nodeList);
}

void FlatModel::fetchMore(const QModelIndex &parent)
{
    FolderNode *folderNode = qobject_cast<FolderNode*>(nodeForIndex(parent));
dt's avatar
dt committed
394
    Q_ASSERT(folderNode);
con's avatar
con committed
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

    fetchMore(folderNode);
}

void FlatModel::setStartupProject(ProjectNode *projectNode)
{
    if (m_startupProject != projectNode) {
        QModelIndex oldIndex = (m_startupProject ? indexForNode(m_startupProject) : QModelIndex());
        QModelIndex newIndex = (projectNode ? indexForNode(projectNode) : QModelIndex());
        m_startupProject = projectNode;
        if (oldIndex.isValid())
            emit dataChanged(oldIndex, oldIndex);
        if (newIndex.isValid())
            emit dataChanged(newIndex, newIndex);
    }
}

void FlatModel::reset()
{
    m_childNodes.clear();
    QAbstractItemModel::reset();
}

QModelIndex FlatModel::indexForNode(const Node *node_)
{
    // We assume that we are only called for nodes that are represented

    // we use non-const pointers internally
    Node *node = const_cast<Node*>(node_);
    if (!node)
        return QModelIndex();

    if (node == m_rootNode)
        return createIndex(0, 0, m_rootNode);

    FolderNode *parentNode = visibleFolderNode(node->parentFolderNode());

    // Do we have the parent mapped?
    QHash<FolderNode*, QList<Node*> >::const_iterator it = m_childNodes.constFind(parentNode);
    if (it == m_childNodes.constEnd()) {
        fetchMore(parentNode);
        it = m_childNodes.constFind(parentNode);
    }
    if (it != m_childNodes.constEnd()) {
        const int row = it.value().indexOf(node);
        if (row != -1)
            return createIndex(row, 0, node);
    }
    return QModelIndex();
}

void FlatModel::setProjectFilterEnabled(bool filter)
{
448 449
    if (filter == m_filterProjects)
        return;
con's avatar
con committed
450 451 452 453 454 455 456 457 458 459
    m_filterProjects = filter;
    reset();
}

void FlatModel::setGeneratedFilesFilterEnabled(bool filter)
{
    m_filterGeneratedFiles = filter;
    reset();
}

460 461 462 463 464 465 466 467 468 469
bool FlatModel::projectFilterEnabled()
{
    return m_filterProjects;
}

bool FlatModel::generatedFilesFilterEnabled()
{
    return m_filterGeneratedFiles;
}

con's avatar
con committed
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
Node *FlatModel::nodeForIndex(const QModelIndex &index) const
{
    if (index.isValid())
        return (Node*)index.internalPointer();
    return 0;
}

/*
  Returns the first folder node in the ancestors
  for the given node that is not filtered
  out by the Flat Model.
*/
FolderNode *FlatModel::visibleFolderNode(FolderNode *node) const
{
    if (!node)
        return 0;

    for (FolderNode *folderNode = node;
         folderNode;
         folderNode = folderNode->parentFolderNode()) {
        if (!filter(folderNode))
            return folderNode;
    }
    return 0;
}

bool FlatModel::filter(Node *node) const
{
    bool isHidden = false;
499 500 501
    if (node->nodeType() == SessionNodeType) {
        isHidden = false;
    } else if (ProjectNode *projectNode = qobject_cast<ProjectNode*>(node)) {
con's avatar
con committed
502
        if (m_filterProjects && projectNode->parentFolderNode() != m_rootNode)
503
            isHidden = !projectNode->hasBuildTargets();
504 505 506 507
    } else if (node->nodeType() == FolderNodeType) {
        if (m_filterProjects)
            isHidden = true;
    } else if (FileNode *fileNode = qobject_cast<FileNode*>(node)) {
con's avatar
con committed
508 509 510 511 512 513 514
        if (m_filterGeneratedFiles)
            isHidden = fileNode->isGenerated();
    }

    return isHidden;
}

515 516 517 518 519 520 521 522 523 524
bool isSorted(const QList<Node *> &nodes)
{
    int size = nodes.size();
    for (int i = 0; i < size -1; ++i) {
        if (!sortNodes(nodes.at(i), nodes.at(i+1)))
            return false;
    }
    return true;
}

con's avatar
con committed
525 526 527 528 529 530 531 532 533 534 535 536 537 538
/// slots and all the fun
void FlatModel::added(FolderNode* parentNode, const QList<Node*> &newNodeList)
{
    QModelIndex parentIndex = indexForNode(parentNode);
    // Old  list
    QHash<FolderNode*, QList<Node*> >::const_iterator it = m_childNodes.constFind(parentNode);
    if (it == m_childNodes.constEnd())
        return;
    QList<Node *> oldNodeList = it.value();

    // Compare lists and emit signals, and modify m_childNodes on the fly
    QList<Node *>::const_iterator oldIter = oldNodeList.constBegin();
    QList<Node *>::const_iterator newIter = newNodeList.constBegin();

539 540 541 542 543 544 545 546 547 548 549 550 551 552 553
    Q_ASSERT(isSorted(oldNodeList));
    Q_ASSERT(isSorted(newNodeList));

    QSet<Node *> emptyDifference;
    emptyDifference = oldNodeList.toSet();
    emptyDifference.subtract(newNodeList.toSet());
    if (!emptyDifference.isEmpty()) {
        // This should not happen...
        qDebug() << "FlatModel::added, old Node list should be subset of newNode list, found files in old list which were not part of new list";
        foreach (Node *n, emptyDifference) {
            qDebug()<<n->path();
        }
        Q_ASSERT(false);
    }

con's avatar
con committed
554 555 556 557 558 559 560 561 562 563 564 565
    // optimization, check for old list is empty
    if (oldIter == oldNodeList.constEnd()) {
        // New Node List is empty, nothing added which intrest us
        if (newIter == newNodeList.constEnd())
            return;
        // So all we need to do is easy
        beginInsertRows(parentIndex, 0, newNodeList.size() - 1);
        m_childNodes.insert(parentNode, newNodeList);
        endInsertRows();
        return;
    }

hjk's avatar
hjk committed
566
    while (true) {
con's avatar
con committed
567
        // Skip all that are the same
hjk's avatar
hjk committed
568
        while (*oldIter == *newIter) {
con's avatar
con committed
569 570 571 572 573 574 575 576 577 578
            ++oldIter;
            ++newIter;
            if (oldIter == oldNodeList.constEnd()) {
                // At end of oldNodeList, sweep up rest of newNodeList
                QList<Node *>::const_iterator startOfBlock = newIter;
                newIter = newNodeList.constEnd();
                int pos = oldIter - oldNodeList.constBegin();
                int count = newIter - startOfBlock;
                if (count > 0) {
                    beginInsertRows(parentIndex, pos, pos+count-1);
hjk's avatar
hjk committed
579
                    while (startOfBlock != newIter) {
con's avatar
con committed
580 581 582 583 584 585 586 587 588 589 590 591
                        oldNodeList.insert(pos, *startOfBlock);
                        ++pos;
                        ++startOfBlock;
                    }
                    m_childNodes.insert(parentNode, oldNodeList);
                    endInsertRows();
                }
                return; // Done with the lists, leave the function
            }
        }

        QList<Node *>::const_iterator startOfBlock = newIter;
hjk's avatar
hjk committed
592
        while (*oldIter != *newIter)
con's avatar
con committed
593 594 595 596 597 598 599 600
            ++newIter;
        // startOfBlock is the first that was diffrent
        // newIter points to the new position of oldIter
        // newIter - startOfBlock is number of new items
        // oldIter is the position where those are...
        int pos = oldIter - oldNodeList.constBegin();
        int count = newIter - startOfBlock;
        beginInsertRows(parentIndex, pos, pos + count - 1);
hjk's avatar
hjk committed
601
        while (startOfBlock != newIter) {
con's avatar
con committed
602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618
            oldNodeList.insert(pos, *startOfBlock);
            ++pos;
            ++startOfBlock;
        }
        m_childNodes.insert(parentNode, oldNodeList);
        endInsertRows();
        oldIter = oldNodeList.constBegin() + pos;
    }
}

void FlatModel::removed(FolderNode* parentNode, const QList<Node*> &newNodeList)
{
    QModelIndex parentIndex = indexForNode(parentNode);
    // Old  list
    QHash<FolderNode*, QList<Node*> >::const_iterator it = m_childNodes.constFind(parentNode);
    if (it == m_childNodes.constEnd())
        return;
619

con's avatar
con committed
620 621 622 623 624
    QList<Node *> oldNodeList = it.value();
    // Compare lists and emit signals, and modify m_childNodes on the fly
    QList<Node *>::const_iterator oldIter = oldNodeList.constBegin();
    QList<Node *>::const_iterator newIter = newNodeList.constBegin();

625 626 627 628 629 630 631 632 633 634 635 636 637 638 639
    Q_ASSERT(isSorted(oldNodeList));
    Q_ASSERT(isSorted(newNodeList));

    QSet<Node *> emptyDifference;
    emptyDifference = newNodeList.toSet();
    emptyDifference.subtract(oldNodeList.toSet());
    if (!emptyDifference.isEmpty()) {
        // This should not happen...
        qDebug() << "FlatModel::removed, new Node list should be subset of oldNode list, found files in new list which were not part of old list";
        foreach (Node *n, emptyDifference) {
            qDebug()<<n->path();
        }
        Q_ASSERT(false);
    }

con's avatar
con committed
640 641 642 643 644 645 646 647 648 649 650 651
    // optimization, check for new list is empty
    if (newIter == newNodeList.constEnd()) {
        // New Node List is empty, everything removed
        if (oldIter == oldNodeList.constEnd())
            return;
        // So all we need to do is easy
        beginRemoveRows(parentIndex, 0, oldNodeList.size() - 1);
        m_childNodes.insert(parentNode, newNodeList);
        endRemoveRows();
        return;
    }

hjk's avatar
hjk committed
652
    while (true) {
con's avatar
con committed
653
        // Skip all that are the same
hjk's avatar
hjk committed
654
        while (*oldIter == *newIter) {
con's avatar
con committed
655 656 657 658 659 660 661 662 663 664
            ++oldIter;
            ++newIter;
            if (newIter == newNodeList.constEnd()) {
                // At end of newNodeList, sweep up rest of oldNodeList
                QList<Node *>::const_iterator startOfBlock = oldIter;
                oldIter = oldNodeList.constEnd();
                int pos = startOfBlock - oldNodeList.constBegin();
                int count = oldIter - startOfBlock;
                if (count > 0) {
                    beginRemoveRows(parentIndex, pos, pos+count-1);
hjk's avatar
hjk committed
665
                    while (startOfBlock != oldIter) {
con's avatar
con committed
666 667 668 669 670 671 672 673 674 675 676 677
                        ++startOfBlock;
                        oldNodeList.removeAt(pos);
                    }

                    m_childNodes.insert(parentNode, oldNodeList);
                    endRemoveRows();
                }
                return; // Done with the lists, leave the function
            }
        }

        QList<Node *>::const_iterator startOfBlock = oldIter;
hjk's avatar
hjk committed
678
        while (*oldIter != *newIter)
con's avatar
con committed
679 680 681 682 683 684 685 686
            ++oldIter;
        // startOfBlock is the first that was diffrent
        // oldIter points to the new position of newIter
        // oldIter - startOfBlock is number of new items
        // newIter is the position where those are...
        int pos = startOfBlock - oldNodeList.constBegin();
        int count = oldIter - startOfBlock;
        beginRemoveRows(parentIndex, pos, pos + count - 1);
hjk's avatar
hjk committed
687
        while (startOfBlock != oldIter) {
con's avatar
con committed
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
            ++startOfBlock;
            oldNodeList.removeAt(pos);
        }
        m_childNodes.insert(parentNode, oldNodeList);
        endRemoveRows();
        oldIter = oldNodeList.constBegin() + pos;
    }
}

void FlatModel::foldersAboutToBeAdded(FolderNode *parentFolder, const QList<FolderNode*> &newFolders)
{
    Q_UNUSED(newFolders)
    m_parentFolderForChange = parentFolder;
}

void FlatModel::foldersAdded()
{
    // First found out what the folder is that we are adding the files to
    FolderNode *folderNode = visibleFolderNode(m_parentFolderForChange);

    // Now get the new list for that folder
    QList<Node *> newNodeList = childNodes(folderNode);

    added(folderNode, newNodeList);
}

void FlatModel::foldersAboutToBeRemoved(FolderNode *parentFolder, const QList<FolderNode*> &staleFolders)
{
    QSet<Node *> blackList;
hjk's avatar
hjk committed
717
    foreach (FolderNode *node, staleFolders)
con's avatar
con committed
718 719 720 721 722
        blackList.insert(node);

    FolderNode *folderNode = visibleFolderNode(parentFolder);
    QList<Node *> newNodeList = childNodes(folderNode, blackList);

723
    removed(folderNode, newNodeList);
con's avatar
con committed
724 725 726 727 728
    removeFromCache(staleFolders);
}

void FlatModel::removeFromCache(QList<FolderNode *> list)
{
hjk's avatar
hjk committed
729
    foreach (FolderNode *fn, list) {
con's avatar
con committed
730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761
        removeFromCache(fn->subFolderNodes());
        m_childNodes.remove(fn);
    }
}

void FlatModel::foldersRemoved()
{
    // Do nothing
}

void FlatModel::filesAboutToBeAdded(FolderNode *folder, const QList<FileNode*> &newFiles)
{
    Q_UNUSED(newFiles)
    m_parentFolderForChange = folder;
}

void FlatModel::filesAdded()
{
    // First find out what the folder is that we are adding the files to
    FolderNode *folderNode = visibleFolderNode(m_parentFolderForChange);

    // Now get the new List for that folder
    QList<Node *> newNodeList = childNodes(folderNode);
    added(folderNode, newNodeList);
}

void FlatModel::filesAboutToBeRemoved(FolderNode *folder, const QList<FileNode*> &staleFiles)
{
    // First found out what the folder (that is the project) is that we are adding the files to
    FolderNode *folderNode = visibleFolderNode(folder);

    QSet<Node *> blackList;
hjk's avatar
hjk committed
762
    foreach(Node *node, staleFiles)
con's avatar
con committed
763 764 765 766 767 768 769 770 771 772 773
        blackList.insert(node);

    // Now get the new List for that folder
    QList<Node *> newNodeList = childNodes(folderNode, blackList);
    removed(folderNode, newNodeList);
}

void FlatModel::filesRemoved()
{
    // Do nothing
}