Custom wizard: Add setting for PathChooser's expectedKind.

Change-Id: Iff8955d0db20c5c00f8a1745ab1f4310482254cb
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

doc/src/projects/creator-projects-custom-wizards.qdoc

@@ -431,13 +431,31 @@
 
     \code
     <field mandatory="true" name="QtCreatorSources">
-        <fieldcontrol class="Utils::PathChooser" defaulttext="" />
+        <fieldcontrol class="Utils::PathChooser" defaulttext="" expectedkind="existingdirectory"/>
             <fielddescription>Qt Creator sources:</fielddescription>
     </field>
     \endcode
 
     The \c defaulttext attribute specifies text that appears in the field by default.
 
+    The text attribute \c expectedkind specifies which type of path is expected:
+
+    \list
+
+        \li \c any accepts any kind of path.
+
+        \li \c file expects a file.
+
+        \li \c directory expects a directory.
+
+        \li \c existingdirectory expects an existing directory.
+
+        \li \c command expects an executable file.
+
+        \li \c existingcommand expects an existing, executable file.
+
+    \endlist
+
     \section2 Check Boxes
 
     To make check boxes appear selected by default, set the \c fieldcontrol attribute

src/plugins/projectexplorer/customwizard/customwizardpage.cpp

@@ -315,6 +315,20 @@ QWidget *CustomWizardFieldPage::registerPathChooser(const QString &fieldName,
                                                  const CustomWizardField &field)
 {
     Utils::PathChooser *pathChooser = new Utils::PathChooser;
+    const QString expectedKind = field.controlAttributes.value(QLatin1String("expectedkind")).toLower();
+    if (expectedKind == QLatin1String("existingdirectory"))
+        pathChooser->setExpectedKind(Utils::PathChooser::ExistingDirectory);
+    else if (expectedKind == QLatin1String("directory"))
+        pathChooser->setExpectedKind(Utils::PathChooser::Directory);
+    else if (expectedKind == QLatin1String("file"))
+        pathChooser->setExpectedKind(Utils::PathChooser::File);
+    else if (expectedKind == QLatin1String("existingcommand"))
+        pathChooser->setExpectedKind(Utils::PathChooser::ExistingCommand);
+    else if (expectedKind == QLatin1String("command"))
+        pathChooser->setExpectedKind(Utils::PathChooser::Command);
+    else if (expectedKind == QLatin1String("any"))
+        pathChooser->setExpectedKind(Utils::PathChooser::Any);
+
     registerField(fieldName, pathChooser, "path", SIGNAL(changed(QString)));
     const QString defaultText = field.controlAttributes.value(QLatin1String("defaulttext"));
     m_pathChoosers.push_back(PathChooserData(pathChooser, defaultText));