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@116:     Copyright (c) 2010 Chris Cannam
Chris@116:     Copyright (c) 2010 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@116: #include "panned.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@116: 
Chris@116: HistoryWidget::HistoryWidget()
Chris@116: {
Chris@116:     m_panned = new Panned;
Chris@116:     m_panner = new Panner;
Chris@129:     m_uncommitted = new UncommittedItem();
Chris@129:     m_uncommitted->setRow(-1);
Chris@116: 
Chris@116:     QGridLayout *layout = new QGridLayout;
Chris@116:     layout->addWidget(m_panned, 0, 0);
Chris@116:     layout->addWidget(m_panner, 0, 1);
Chris@116:     m_panner->setMaximumWidth(80);
Chris@116:     m_panner->connectToPanned(m_panned);
Chris@116: 
Chris@116:     setLayout(layout);
Chris@116: }
Chris@116: 
Chris@116: HistoryWidget::~HistoryWidget()
Chris@116: {
Chris@116:     clearChangesets();
Chris@129:     delete m_uncommitted;
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@128: void HistoryWidget::setCurrent(QStringList ids)
Chris@128: {
Chris@128:     if (m_currentIds == ids) return;
Chris@128:     DEBUG << "HistoryWidget::setCurrent: " << ids.size() << " ids" << endl;
Chris@128:     m_currentIds = ids;
Chris@128:     updateCurrentItems();
Chris@128: }
Chris@128: 
Chris@128: void HistoryWidget::showUncommittedChanges(bool show)
Chris@128: {
Chris@129:     QGraphicsScene *scene = m_panned->scene();
Chris@129:     if (!scene) return;
Chris@129: 
Chris@129:     if (show) {
Chris@129:         if (m_uncommitted->scene() == scene) return;
Chris@129:         scene->addItem(m_uncommitted);
Chris@129:         m_uncommitted->ensureVisible();
Chris@129:     } else {
Chris@129:         if (m_uncommitted->scene() != scene) return;
Chris@129:         scene->removeItem(m_uncommitted);
Chris@129:     }
Chris@128: }
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@120:     clearChangesets();
Chris@120:     m_changesets = csets;
Chris@120:     layoutAll();
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@122:         csets << m_changesets;
Chris@122:         m_changesets = csets;
Chris@120:         layoutAll();
Chris@120:     }
Chris@120: }
Chris@120: 
Chris@120: void HistoryWidget::layoutAll()
Chris@116: {
Chris@122:     setChangesetParents();
Chris@129:     showUncommittedChanges(false); // detach the item from our scene
Chris@122: 
Chris@119:     ChangesetScene *scene = new ChangesetScene();
Chris@116:     ChangesetItem *tipItem = 0;
Chris@116: 
Chris@120:     if (!m_changesets.empty()) {
Chris@116: 	Grapher g(scene);
Chris@116: 	try {
Chris@120: 	    g.layout(m_changesets);
Chris@116: 	} catch (std::string s) {
Chris@116: 	    std::cerr << "Internal error: Layout failed: " << s << std::endl;
Chris@116: 	}
Chris@120: 	tipItem = g.getItemFor(m_changesets[0]);
Chris@120:         DEBUG << "tipItem is " << tipItem << " for tip changeset " 
Chris@120:               << m_changesets[0]->id() << endl;
Chris@116:     }
Chris@116: 
Chris@116:     QGraphicsScene *oldScene = m_panned->scene();
Chris@116:     m_panned->setScene(scene);
Chris@116:     m_panner->setScene(scene);
Chris@116: 
Chris@116:     if (oldScene) delete oldScene;
Chris@116:     if (tipItem) tipItem->ensureVisible();
Chris@128: 
Chris@128:     updateCurrentItems();
Chris@116: }
Chris@116: 
Chris@122: void HistoryWidget::setChangesetParents()
Chris@116: {
Chris@122:     for (int i = 0; i+1 < 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@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@128: void HistoryWidget::updateCurrentItems()
Chris@128: {
Chris@128:     QGraphicsScene *scene = m_panned->scene();
Chris@128:     if (!scene) return;
Chris@128:     QList<QGraphicsItem *> items = scene->items();
Chris@128:     foreach (QGraphicsItem *it, items) {
Chris@128:         ChangesetItem *csit = dynamic_cast<ChangesetItem *>(it);
Chris@128:         if (csit) {
Chris@128:             QString id = csit->getChangeset()->id();
Chris@128:             bool current = m_currentIds.contains(id);
Chris@128:             if (current) {
Chris@128:                 DEBUG << "id " << id << " is current" << endl;
Chris@128:             }
Chris@128:             csit->setCurrent(current);
Chris@129:             m_uncommitted->setRow(csit->row() - 1);
Chris@129:             m_uncommitted->setColumn(csit->column());
Chris@129:             m_uncommitted->setWide(csit->isWide());
Chris@129:             m_uncommitted->setBranch(csit->getChangeset()->branch());
Chris@128:         }
Chris@128:     }
Chris@128: }
Chris@128: