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unity8/plugins/WindowManager/WorkspaceModel.cpp
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1/*
2 * Copyright (C) 2017 Canonical, Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 3.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
17#include "WorkspaceModel.h"
18#include "WorkspaceManager.h"
19#include "Workspace.h"
21#include <QQmlEngine>
23Q_LOGGING_CATEGORY(WORKSPACES, "Workspaces", QtInfoMsg)
25#define DEBUG_MSG qCDebug(WORKSPACES).nospace().noquote() << __func__
26#define INFO_MSG qCInfo(WORKSPACES).nospace().noquote() << __func__
28WorkspaceModel::WorkspaceModel(QObject *parent)
29 : QAbstractListModel(parent)
33void WorkspaceModel::append(Workspace *workspace)
35 insert(m_workspaces.count(), workspace);
38void WorkspaceModel::insert(int index, Workspace *workspace)
40 beginInsertRows(QModelIndex(), index, index);
42 m_workspaces.insert(index, workspace);
44 endInsertRows();
46 Q_EMIT workspaceInserted(index, workspace);
47 Q_EMIT countChanged();
50void WorkspaceModel::remove(Workspace *workspace)
52 int index = m_workspaces.indexOf(workspace);
53 if (index < 0) return;
55 beginRemoveRows(QModelIndex(), index, index);
57 m_workspaces.removeAt(index);
59 endRemoveRows();
61 m_unassignedWorkspaces.insert(workspace);
62 connect(workspace, &Workspace::assigned, this, [=]() {
63 m_unassignedWorkspaces.remove(workspace);
64 disconnect(workspace, &Workspace::assigned, this, 0);
65 });
66 connect(workspace, &QObject::destroyed, this, [=]() {
67 m_unassignedWorkspaces.remove(workspace);
68 });
70 Q_EMIT workspaceRemoved(workspace);
71 Q_EMIT countChanged();
74void WorkspaceModel::move(int from, int to)
76 if (from == to) return;
77 DEBUG_MSG << " from=" << from << " to=" << to;
79 if (from >= 0 && from < m_workspaces.size() && to >= 0 && to < m_workspaces.size()) {
80 QModelIndex parent;
82 beginMoveRows(parent, from, from, parent, to + (to > from ? 1 : 0));
83#if QT_VERSION < QT_VERSION_CHECK(5, 6, 0)
84 const auto &window = m_windowModel.takeAt(from);
85 m_workspaces.insert(to, window);
86#else
87 m_workspaces.move(from, to);
88#endif
89 endMoveRows();
91 Q_EMIT workspaceMoved(from, to);
92 }
95int WorkspaceModel::indexOf(Workspace *workspace) const
97 return m_workspaces.indexOf(workspace);
100Workspace *WorkspaceModel::get(int index) const
102 if (index < 0 || index >= rowCount()) return nullptr;
103 return m_workspaces.at(index);
106int WorkspaceModel::rowCount(const QModelIndex &) const
108 return m_workspaces.count();
111QVariant WorkspaceModel::data(const QModelIndex &index, int role) const
113 if (index.row() < 0 || index.row() >= m_workspaces.size())
114 return QVariant();
116 if (role == WorkspaceRole) {
117 Workspace *workspace = m_workspaces.at(index.row());
118 return QVariant::fromValue(workspace);
119 } else {
120 return QVariant();
121 }
124void WorkspaceModel::setSyncing(bool syncing)
126 m_syncing = syncing;
129void WorkspaceModel::sync(WorkspaceModel *proxy)
131 qDebug() << "SYNC" << this << proxy;
132 if (!proxy) return;
133 const auto& proxyList = proxy->list();
135 // check for removals
136 int removedIndexWhichWasActive = -1;
137 QVector<Workspace*> dpCpy(this->list());
138 Q_FOREACH(auto workspace, dpCpy) {
140 bool found = false;
141 Q_FOREACH(auto p, proxyList) {
142 auto workspaceProxy = qobject_cast<ProxyWorkspace*>(p);
143 if (workspaceProxy->proxyObject() == workspace) {
144 found = true;
145 break;
146 }
147 }
148 if (!found) {
149 if (workspace->isActive()) {
150 removedIndexWhichWasActive = indexOf(workspace);
151 }
152 workspace->unassign();
153 }
154 }
156 // existing
157 QSet<Workspace*> newWorkspaces;
158 for (int i = 0; i < proxyList.count(); i++) {
159 auto workspaceProxy = qobject_cast<ProxyWorkspace*>(proxyList[i]);
160 auto workspace = workspaceProxy->proxyObject();
162 int oldIndex = this->indexOf(workspace);
164 if (oldIndex < 0) {
165 workspace->assign(this, QVariant(i));
166 } else if (oldIndex != i) {
167 this->move(oldIndex, i);
168 }
169 newWorkspaces.insert(workspace);
170 }
172 // Make sure we have at least one workspace in the model.
173 if (rowCount() == 0) {
174 Workspace* workspace = WorkspaceManager::instance()->createWorkspace();
175 workspace->assign(this);
176 (new ProxyWorkspace(workspace))->assign(proxy);
177 }
179 if (removedIndexWhichWasActive != -1) {
180 int newActiveIndex = qMin(removedIndexWhichWasActive, this->rowCount()-1);
181 Workspace* newActiveWorkspace = newActiveIndex >= 0 ? this->get(newActiveIndex) : nullptr;
183 WorkspaceManager::instance()->setActiveWorkspace(newActiveWorkspace);
184 }
186 proxy->finishSync();
187 finishSync();
190void WorkspaceModel::finishSync()
192 QSet<Workspace*> dpCpy(m_unassignedWorkspaces);
193 Q_FOREACH(auto workspace, dpCpy) {
194 delete workspace;
195 }
196 m_unassignedWorkspaces.clear();
199ProxyWorkspaceModel::ProxyWorkspaceModel(WorkspaceModel * const model)
200 : m_original(model)
202 Q_FOREACH(auto workspace, model->list()) {
203 auto proxy = new ProxyWorkspace(workspace);
204 QQmlEngine::setObjectOwnership(proxy, QQmlEngine::CppOwnership);
205 proxy->assign(this);
206 }
207 connect(m_original, &WorkspaceModel::workspaceInserted, this, [this](int index, Workspace* inserted) {
208 if (m_original->isSyncing()) return;
210 (new ProxyWorkspace(inserted))->assign(this, index);
211 });
212 connect(m_original, &WorkspaceModel::workspaceRemoved, this, [this](Workspace* removed) {
213 if (m_original->isSyncing()) return;
215 for (int i = 0; i < rowCount(); i++) {
216 auto workspaceProxy = qobject_cast<ProxyWorkspace*>(get(i));
217 auto w = workspaceProxy->proxyObject();
218 if (w == removed) {
219 remove(workspaceProxy);
220 break;
221 }
222 }
223 });
224 connect(m_original, &WorkspaceModel::workspaceMoved, this, [this](int from, int to) {
225 if (m_original->isSyncing()) return;
227 move(from, to);
228 });
231ProxyWorkspaceModel::~ProxyWorkspaceModel()
233 qDeleteAll(m_workspaces.toList()); // make a copy so the list doesnt edit itself during delete.
234 m_workspaces.clear();
237void ProxyWorkspaceModel::move(int from, int to)
239 WorkspaceModel::move(from, to);