Chris@116: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@116: 
Chris@116: /*
Chris@116:     EasyMercurial
Chris@116: 
Chris@116:     Based on HgExplorer by Jari Korhonen
Chris@116:     Copyright (c) 2010 Jari Korhonen
Chris@244:     Copyright (c) 2011 Chris Cannam
Chris@244:     Copyright (c) 2011 Queen Mary, University of London
Chris@116:     
Chris@116:     This program is free software; you can redistribute it and/or
Chris@116:     modify it under the terms of the GNU General Public License as
Chris@116:     published by the Free Software Foundation; either version 2 of the
Chris@116:     License, or (at your option) any later version.  See the file
Chris@116:     COPYING included with this distribution for more information.
Chris@116: */
Chris@116: 
Chris@116: #include "historywidget.h"
Chris@116: 
Chris@119: #include "changesetscene.h"
Chris@397: #include "changesetview.h"
Chris@116: #include "panner.h"
Chris@116: #include "grapher.h"
Chris@116: #include "debug.h"
Chris@129: #include "uncommitteditem.h"
Chris@116: 
Chris@116: #include <iostream>
Chris@116: 
Chris@116: #include <QGridLayout>
Chris@513: #include <QSettings>
Chris@116: 
Chris@154: HistoryWidget::HistoryWidget() :
Chris@154:     m_showUncommitted(false),
Chris@154:     m_refreshNeeded(false)
Chris@116: {
Chris@397:     m_panned = new ChangesetView;
Chris@116:     m_panner = new Panner;
Chris@116: 
Chris@168:     m_panned->setDragMode(QGraphicsView::ScrollHandDrag);
Chris@250:     m_panned->setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
Chris@397:     m_panned->setCacheMode(QGraphicsView::CacheNone);
Chris@168: 
Chris@513:     int row = 0;
Chris@513: 
Chris@116:     QGridLayout *layout = new QGridLayout;
Chris@513:     layout->setMargin(10);
Chris@513:     layout->addWidget(m_panned, row, 0);
Chris@513:     layout->addWidget(m_panner, row, 1);
Chris@116:     m_panner->setMaximumWidth(80);
Chris@116:     m_panner->connectToPanned(m_panned);
Chris@116: 
Chris@513:     layout->setRowStretch(row, 20);
Chris@513: 
Chris@513:     QSettings settings;
Chris@513:     settings.beginGroup("Presentation");
Chris@513:     bool showClosed = (settings.value("showclosedbranches", false).toBool());
Chris@513: 
Chris@513:     m_showClosedBranches = new QCheckBox(tr("Show closed branches"), this);
Chris@513:     m_showClosedBranches->setChecked(showClosed);
Chris@513:     connect(m_showClosedBranches, SIGNAL(toggled(bool)), 
Chris@513:             this, SLOT(showClosedChanged(bool)));
Chris@513:     layout->addWidget(m_showClosedBranches, ++row, 0, Qt::AlignLeft);
Chris@513:     m_showClosedBranches->hide();
Chris@513: 
Chris@116:     setLayout(layout);
Chris@116: }
Chris@116: 
Chris@116: HistoryWidget::~HistoryWidget()
Chris@116: {
Chris@116:     clearChangesets();
Chris@145: }
Chris@145: 
Chris@145: QGraphicsScene *HistoryWidget::scene()
Chris@145: {
Chris@145:     return m_panned->scene();
Chris@116: }
Chris@116: 
Chris@116: void HistoryWidget::clearChangesets()
Chris@116: {
Chris@116:     foreach (Changeset *cs, m_changesets) delete cs;
Chris@116:     m_changesets.clear();
Chris@116: }
Chris@128: 
Chris@153: void HistoryWidget::setCurrent(QStringList ids, QString branch,
Chris@153:                                bool showUncommitted)
Chris@128: {
Chris@153:     if (m_currentIds == ids &&
Chris@153:         m_currentBranch == branch &&
Chris@153:         m_showUncommitted == showUncommitted) return;
Chris@145: 
Chris@145:     DEBUG << "HistoryWidget::setCurrent: " << ids.size() << " ids, "
Chris@145:           << "showUncommitted: " << showUncommitted << endl;
Chris@145: 
Chris@133:     m_currentIds.clear();
Chris@153:     m_currentBranch = branch;
Chris@145:     m_showUncommitted = showUncommitted;
Chris@145: 
Chris@145:     if (ids.empty()) return;
Chris@145: 
Chris@133:     foreach (QString id, ids) {
Chris@133:         m_currentIds.push_back(id);
Chris@133:     }
Chris@128: 
Chris@154:     m_refreshNeeded = true;
Chris@128: }
Chris@505: 
Chris@506: void HistoryWidget::setClosedHeadIds(QSet<QString> closed)
Chris@506: {
Chris@506:     if (closed == m_closedIds) return;
Chris@506:     m_closedIds = closed;
Chris@513:     m_showClosedBranches->setVisible(!closed.empty());
Chris@506:     m_refreshNeeded = true;
Chris@506: }
Chris@506: 
Chris@505: void HistoryWidget::setShowUncommitted(bool showUncommitted)
Chris@505: {
Chris@505:     setCurrent(m_currentIds, m_currentBranch, showUncommitted);
Chris@505: }
Chris@513: 
Chris@513: void HistoryWidget::showClosedChanged(bool show)
Chris@513: {
Chris@513:     QSettings settings;
Chris@513:     settings.beginGroup("Presentation");
Chris@513:     settings.setValue("showclosedbranches", show);
Chris@513:     layoutAll();
Chris@513: }
Chris@116:     
Chris@120: void HistoryWidget::parseNewLog(QString log)
Chris@120: {
Chris@120:     DEBUG << "HistoryWidget::parseNewLog: log has " << log.length() << " chars" << endl;
Chris@122:     Changesets csets = Changeset::parseChangesets(log);
Chris@120:     DEBUG << "HistoryWidget::parseNewLog: log has " << csets.size() << " changesets" << endl;
Chris@133:     replaceChangesets(csets);
Chris@154:     m_refreshNeeded = true;
Chris@120: }
Chris@120:     
Chris@120: void HistoryWidget::parseIncrementalLog(QString log)
Chris@120: {
Chris@120:     DEBUG << "HistoryWidget::parseIncrementalLog: log has " << log.length() << " chars" << endl;
Chris@122:     Changesets csets = Changeset::parseChangesets(log);
Chris@120:     DEBUG << "HistoryWidget::parseIncrementalLog: log has " << csets.size() << " changesets" << endl;
Chris@120:     if (!csets.empty()) {
Chris@133:         addChangesets(csets);
Chris@120:     }
Chris@154:     m_refreshNeeded = true;
Chris@120: }
Chris@120: 
Chris@133: void HistoryWidget::replaceChangesets(Changesets csets)
Chris@133: {
Chris@133:     QSet<QString> oldIds;
Chris@133:     foreach (Changeset *cs, m_changesets) {
Chris@133:         oldIds.insert(cs->id());
Chris@133:     }
Chris@133: 
Chris@133:     QSet<QString> newIds;
Chris@133:     foreach (Changeset *cs, csets) {
Chris@133:         if (!oldIds.contains(cs->id())) {
Chris@133:             newIds.insert(cs->id());
Chris@133:         }
Chris@133:     }
Chris@133: 
Chris@133:     if (newIds.size() == csets.size()) {
Chris@133:         // completely new set, unrelated to the old: don't mark new
Chris@133:         m_newIds.clear();
Chris@133:     } else {
Chris@133:         m_newIds = newIds;
Chris@133:     }
Chris@133: 
Chris@133:     clearChangesets();
Chris@133:     m_changesets = csets;
Chris@133: }
Chris@133: 
Chris@133: void HistoryWidget::addChangesets(Changesets csets)
Chris@133: {
Chris@133:     m_newIds.clear();
Chris@138: 
Chris@138:     if (csets.empty()) return;
Chris@138: 
Chris@133:     foreach (Changeset *cs, csets) {
Chris@133:         m_newIds.insert(cs->id());
Chris@133:     }
Chris@133: 
Chris@305:     DEBUG << "addChangesets: " << csets.size() << " new changesets have ("
Chris@305:           << m_changesets.size() << " already)" << endl;
Chris@138: 
Chris@133:     csets << m_changesets;
Chris@133:     m_changesets = csets;
Chris@133: }
Chris@133: 
Chris@154: void HistoryWidget::update()
Chris@154: {
Chris@154:     if (m_refreshNeeded) {
Chris@154:         layoutAll();
Chris@154:     }
Chris@154: }
Chris@154: 
Chris@120: void HistoryWidget::layoutAll()
Chris@116: {
Chris@154:     m_refreshNeeded = false;
Chris@154: 
Chris@122:     setChangesetParents();
Chris@122: 
Chris@119:     ChangesetScene *scene = new ChangesetScene();
Chris@116:     ChangesetItem *tipItem = 0;
Chris@116: 
Chris@138:     QGraphicsScene *oldScene = m_panned->scene();
Chris@138: 
Chris@138:     m_panned->setScene(0);
Chris@138:     m_panner->setScene(0);
Chris@138: 
Chris@138:     delete oldScene;
Chris@138: 
Chris@145:     QGraphicsItem *toFocus = 0;
Chris@145: 
Chris@120:     if (!m_changesets.empty()) {
Chris@116: 	Grapher g(scene);
Chris@506:         g.setClosedHeadIds(m_closedIds);
Chris@116: 	try {
Chris@153: 	    g.layout(m_changesets,
Chris@153:                      m_showUncommitted ? m_currentIds : QStringList(),
Chris@153:                      m_currentBranch);
Chris@116: 	} catch (std::string s) {
Chris@116: 	    std::cerr << "Internal error: Layout failed: " << s << std::endl;
Chris@116: 	}
Chris@145:         toFocus = g.getUncommittedItem();
Chris@145:         if (!toFocus) {
Chris@371:             if (!m_currentIds.empty()) {
Chris@371:                 toFocus = g.getItemFor(m_currentIds[0]);
Chris@371:             } else {
Chris@371:                 toFocus = g.getItemFor(m_changesets[0]);
Chris@371:             }
Chris@145:         }
Chris@134:     }
Chris@134: 
Chris@116:     m_panned->setScene(scene);
Chris@116:     m_panner->setScene(scene);
Chris@116: 
Chris@133:     updateNewAndCurrentItems();
Chris@134: 
Chris@145:     if (toFocus) {
Chris@145:         toFocus->ensureVisible();
Chris@134:     }
Chris@141: 
Chris@141:     connectSceneSignals();
Chris@116: }
Chris@116: 
Chris@122: void HistoryWidget::setChangesetParents()
Chris@116: {
Chris@139:     for (int i = 0; i < m_changesets.size(); ++i) {
Chris@122:         Changeset *cs = m_changesets[i];
Chris@123:         // Need to reset this, as Grapher::layout will recalculate it
Chris@123:         // and we don't want to end up with twice the children for
Chris@123:         // each parent...
Chris@123:         cs->setChildren(QStringList());
Chris@139:     }
Chris@139:     for (int i = 0; i+1 < m_changesets.size(); ++i) {
Chris@139:         Changeset *cs = m_changesets[i];
Chris@116:         if (cs->parents().empty()) {
Chris@116:             QStringList list;
Chris@122:             list.push_back(m_changesets[i+1]->id());
Chris@116:             cs->setParents(list);
Chris@116:         }
Chris@116:     }
Chris@116: }
Chris@128: 
Chris@133: void HistoryWidget::updateNewAndCurrentItems()
Chris@128: {
Chris@128:     QGraphicsScene *scene = m_panned->scene();
Chris@128:     if (!scene) return;
Chris@133: 
Chris@128:     QList<QGraphicsItem *> items = scene->items();
Chris@128:     foreach (QGraphicsItem *it, items) {
Chris@133: 
Chris@128:         ChangesetItem *csit = dynamic_cast<ChangesetItem *>(it);
Chris@133:         if (!csit) continue;
Chris@133: 
Chris@133:         QString id = csit->getChangeset()->id();
Chris@133: 
Chris@133:         bool current = m_currentIds.contains(id);
Chris@133:         if (current) {
Chris@133:             DEBUG << "id " << id << " is current" << endl;
Chris@133:         }
Chris@133:         bool newid = m_newIds.contains(id);
Chris@133:         if (newid) {
Chris@133:             DEBUG << "id " << id << " is new" << endl;
Chris@133:         }
Chris@147: 
Chris@506:         if (csit->isCurrent() != current ||
Chris@506:             csit->isNew() != newid) {
Chris@147:             csit->setCurrent(current);
Chris@147:             csit->setNew(newid);
Chris@147:             csit->update();
Chris@147:         }
Chris@128:     }
Chris@128: }
Chris@141: 
Chris@141: void HistoryWidget::connectSceneSignals()
Chris@141: {
Chris@141:     ChangesetScene *scene = qobject_cast<ChangesetScene *>(m_panned->scene());
Chris@141:     if (!scene) return;
Chris@141:     
Chris@141:     connect(scene, SIGNAL(commit()),
Chris@141:             this, SIGNAL(commit()));
Chris@141:     
Chris@141:     connect(scene, SIGNAL(revert()),
Chris@141:             this, SIGNAL(revert()));
Chris@141:     
Chris@141:     connect(scene, SIGNAL(diffWorkingFolder()),
Chris@141:             this, SIGNAL(diffWorkingFolder()));
Chris@141: 
Chris@168:     connect(scene, SIGNAL(showSummary()),
Chris@168:             this, SIGNAL(showSummary()));
Chris@168: 
Chris@153:     connect(scene, SIGNAL(showWork()),
Chris@153:             this, SIGNAL(showWork()));
Chris@311: 
Chris@311:     connect(scene, SIGNAL(newBranch()),
Chris@311:             this, SIGNAL(newBranch()));
Chris@311: 
Chris@311:     connect(scene, SIGNAL(noBranch()),
Chris@311:             this, SIGNAL(noBranch()));
Chris@153:     
Chris@141:     connect(scene, SIGNAL(updateTo(QString)),
Chris@141:             this, SIGNAL(updateTo(QString)));
Chris@141: 
Chris@141:     connect(scene, SIGNAL(diffToCurrent(QString)),
Chris@141:             this, SIGNAL(diffToCurrent(QString)));
Chris@141: 
Chris@148:     connect(scene, SIGNAL(diffToParent(QString, QString)),
Chris@148:             this, SIGNAL(diffToParent(QString, QString)));
Chris@141: 
Chris@289:     connect(scene, SIGNAL(showSummary(Changeset *)),
Chris@289:             this, SIGNAL(showSummary(Changeset *)));
Chris@288: 
Chris@141:     connect(scene, SIGNAL(mergeFrom(QString)),
Chris@141:             this, SIGNAL(mergeFrom(QString)));
Chris@141: 
Chris@278:     connect(scene, SIGNAL(newBranch(QString)),
Chris@278:             this, SIGNAL(newBranch(QString)));
Chris@278: 
Chris@514:     connect(scene, SIGNAL(closeBranch(QString)),
Chris@514:             this, SIGNAL(closeBranch(QString)));
Chris@514: 
Chris@141:     connect(scene, SIGNAL(tag(QString)),
Chris@141:             this, SIGNAL(tag(QString)));
Chris@141: }