Lots of improvements to IDE behavior.

- Verify config is writable on startup (IDE-130)
- New From Template only requires single click (IDE-191)
- Create new home folder on installation (IDE-192)
- Prevent compilation when circular dependency is detected (IDE-193)
- Open last used device on startup (IDE-190)
- Only check and save files in the current project when building
  (IDE-194)

Author: bweir

src/projectview

@@ -2,6 +2,7 @@
 
 #include <QFileDialog>
 #include <QRegularExpression>
+#include <QStandardPaths>
 
 FileManager::FileManager(QWidget *parent) :
     QTabWidget(parent)
@@ -13,8 +14,53 @@ FileManager::FileManager(QWidget *parent) :
 
     connect(this,   SIGNAL(tabCloseRequested(int)), this,   SLOT(closeFile(int)));
     connect(this,   SIGNAL(currentChanged(int)),    this,   SLOT(changeTab(int)));
+
+    createHome();
+}
+
+bool FileManager::createHome()
+{
+    QSettings settings;
+    settings.beginGroup("Paths");
+
+    QDir projects(QDir::homePath() + "/" + tr("PropellerIDE Projects"));
+
+    if (!projects.exists())
+    {
+        if (!QDir().mkdir(projects.path()))
+        {
+            qCWarning(logfilemanager) << "failed to create projects folder:" << projects.path();
+            return false;
+        }
+    }
+
+    settings.setValue("homeDirectory", projects.path());
+
+    if (settings.value("lastDirectory").toString().isEmpty())
+        settings.setValue("lastDirectory", projects.path());
+
+    settings.endGroup();
+
+    return true;
+}
+
+QString FileManager::getDirectory()
+{
+    QSettings settings;
+    settings.beginGroup("Paths");
+
+    return settings.value("lastDirectory", 
+                settings.value("homeDirectory", QDir::homePath()).toString()).toString();
 }
 
+void FileManager::setDirectory(QString dir)
+{
+    QSettings settings;
+    settings.beginGroup("Paths");
+    settings.setValue("lastDirectory", dir);
+}
+
+
 // THIS IS A HACK OMG SUCH A HACK
 void FileManager::setLanguage(Language * language)
 {
@@ -66,23 +112,15 @@ void FileManager::setCopy(bool available)
 
 void FileManager::open()
 {
-    QSettings settings;
-    settings.beginGroup("Paths");
-
-    QString lastDir = settings.value("lastDirectory",
-                QDir(tabToolTip(currentIndex())).path()).toString();
-
     QStringList fileNames = QFileDialog::getOpenFileNames(this,
-                tr("Open File"), lastDir, "Spin Files (*.spin);;All Files (*)");
+                tr("Open File"), getDirectory(), "Spin Files (*.spin);;All Files (*)");
 
-    if (fileNames.size())
-        settings.setValue("lastDirectory",QDir(fileNames[0]).path());
+    setDirectory(QDir(fileNames[0]).path());
 
     for (int i = 0; i < fileNames.size(); i++)
         if (!fileNames.at(i).isEmpty())
             openFile(fileNames.at(i));
 
-    settings.endGroup();
 }
 
 
@@ -163,19 +201,11 @@ int FileManager::openFile(const QString & fileName)
 
 void FileManager::newFromFile()
 {
-    QSettings settings;
-    settings.beginGroup("Paths");
-
-    QString lastDir = settings.value("lastDirectory",
-                QDir(tabToolTip(currentIndex())).path()).toString();
-
     QString fileName = QFileDialog::getOpenFileName(this,
-                tr("New From File..."), lastDir, "Spin Files (*.spin);;All Files (*)");
+                tr("New From File..."), getDirectory(), "Spin Files (*.spin);;All Files (*)");
 
     if (!fileName.isEmpty())
         newFromFile(fileName);
-
-    settings.endGroup();
 }
 
 
@@ -236,12 +266,16 @@ void FileManager::saveAs(int index)
 {
     QString fileName = tabToolTip(index);
 
+    QString lastDir = QDir(fileName).path();
     if (fileName.isEmpty())
+    {
         fileName = tr("Untitled.spin");
+        lastDir = getDirectory();
+    }
 
     fileName = QFileDialog::getSaveFileName(this,
             tr("Save File As..."), 
-            QDir(fileName).path(), 
+            lastDir,
             tr("Spin Files (*.spin)"));
 
     if (fileName.isEmpty())

src/propelleride/filemanager.cpp

@@ -25,6 +25,10 @@ class FileManager : public QTabWidget
     int isFileEmpty(int index);
     void setLanguage(Language * language);
 
+    bool createHome();
+    QString getDirectory();
+    void setDirectory(QString dir);
+
 public slots:
     int  newFile();
     void newFromFile();

src/propelleride/filemanager.h

@@ -186,7 +186,7 @@
      <item>
       <widget class="QLabel" name="label">
        <property name="text">
-        <string>Click the language, then double-click to select a template.</string>
+        <string>Click the language, then click to select a template.</string>
        </property>
       </widget>
      </item>

src/propelleride/forms/newfromtemplate.ui

@@ -10,6 +10,7 @@
 #include <QString>
 #include <QtGlobal>
 #include <QDateTime>
+#include <QSettings>
 
 #include "logging.h"
 
@@ -67,6 +68,14 @@ int main(int argc, char *argv[])
     QCoreApplication::setApplicationVersion("0.0.0");
 #endif
 
+    QSettings settings;
+    if (settings.status() == QSettings::AccessError)
+    {
+        QMessageBox::critical(0, QObject::tr("Can't open application settings!"), QObject::tr("Unable to open the PropellerIDE settings stored at:\n\n%1\n\nTry deleting the file and restarting PropellerIDE.").arg(settings.fileName()));
+        qCCritical(logmain) << "can't access:" << settings.fileName() << ". Is it writable?";
+        return 1;
+    }
+
     QString description = QObject::tr("An easy-to-use, cross-platform IDE for the Parallax Propeller");
 
     QCommandLineParser parser;

src/propelleride/main.cpp

@@ -336,13 +336,16 @@ void MainWindow::showBrowser()
     }
 }
 
-void MainWindow::checkAndSaveFiles()
+void MainWindow::checkAndSaveFiles(QStringList files)
 {
     for (int i = 0; i < ui.editorTabs->count(); i++)
     {
-        if (ui.editorTabs->getEditor(i)->contentChanged())
+        if (files == QStringList() || files.contains(ui.editorTabs->tabToolTip(i)))
         {
-            ui.editorTabs->save(i);
+            if (ui.editorTabs->getEditor(i)->contentChanged())
+            {
+                ui.editorTabs->save(i);
+            }
         }
     }
 }
@@ -383,8 +386,6 @@ bool MainWindow::runCompiler(bool load, bool write, const QString & name)
     if(!ui.editorTabs->count())
         return false;
 
-    setBuildControls(false);
-
     QString filename = name;
     if (name.isEmpty())
     { 
@@ -394,9 +395,21 @@ bool MainWindow::runCompiler(bool load, bool write, const QString & name)
 
     getApplicationSettings();
 
-    checkAndSaveFiles();
+    checkAndSaveFiles(parser->getFileList());
     setProject();
 
+    if (parser->status() == ProjectParser::CircularDependencyError)
+    {
+        QMessageBox::critical(0, 
+                QObject::tr("Circular dependency!"), 
+                QObject::tr("<p>Your project has a circular dependency. "
+                    "That means one of your objects is including <i>itself</i>.</p>"
+                    "<p>Revise your code to build your project.</p>"));
+        return false;
+    }
+
+    setBuildControls(false);
+
     BuildManager::Configuration config;
 
     config.compiler = spinCompiler;

src/propelleride/mainwindow.cpp

@@ -100,7 +100,7 @@ public slots:
     void saveSession();
     void clearSession();
 
-    void checkAndSaveFiles();
+    void checkAndSaveFiles(QStringList files = QStringList());
 
     bool eventFilter(QObject *target, QEvent *event);
 

src/propelleride/mainwindow.h

@@ -44,18 +44,6 @@ void TemplateIcon::leaveEvent(QEvent * e)
 }
 
 void TemplateIcon::mousePressEvent(QMouseEvent * e)
-{
-    Q_UNUSED(e);
-    setColor(QColor("#2D83DE"));
-}
-
-void TemplateIcon::mouseReleaseEvent(QMouseEvent * e)
-{
-    Q_UNUSED(e);
-    setColor(QColor("#97C9FD"));
-}
-
-void TemplateIcon::mouseDoubleClickEvent(QMouseEvent * e)
 {
     Q_UNUSED(e);
     setColor(QColor("#2D83DE"));

src/propelleride/templateicon.cpp

@@ -24,8 +24,6 @@ public slots:
     virtual void enterEvent(QEvent * e);
     virtual void leaveEvent(QEvent * e);
     virtual void mousePressEvent(QMouseEvent * e);
-    virtual void mouseReleaseEvent(QMouseEvent * e);
-    virtual void mouseDoubleClickEvent(QMouseEvent * e);
 
 signals:
     void templateSelected(const QString & filename);