Fix go-live in service manager if no current item

Add advanced option to auto-preview in media manager
Add keyboard shortcuts for media manager (Delete,+,Enter,Shift-Enter)

bzr-revno: 1442

openlp/core/lib/__init__.py

@@ -166,7 +166,7 @@ def build_icon(icon):
             QtGui.QIcon.Normal, QtGui.QIcon.Off)
     return button_icon
 
-def context_menu_action(base, icon, text, slot):
+def context_menu_action(base, icon, text, slot, shortcuts=None):
     """
     Utility method to help build context menus for plugins
 
@@ -186,6 +186,8 @@ def context_menu_action(base, icon, text, slot):
     if icon:
         action.setIcon(build_icon(icon))
     QtCore.QObject.connect(action, QtCore.SIGNAL(u'triggered()'), slot)
+    if shortcuts:
+        action.setShortcuts(shortcuts)
     return action
 
 def context_menu(base, icon, text):

openlp/core/lib/mediamanageritem.py

@@ -101,6 +101,7 @@ class MediaManagerItem(QtGui.QWidget):
         self.toolbar = None
         self.remoteTriggered = None
         self.singleServiceItem = True
+        self.quickPreviewAllowed = False
         self.pageLayout = QtGui.QVBoxLayout(self)
         self.pageLayout.setSpacing(0)
         self.pageLayout.setMargin(0)
@@ -266,23 +267,25 @@ class MediaManagerItem(QtGui.QWidget):
                 context_menu_action(
                     self.listView, u':/general/general_delete.png',
                     self.plugin.getString(StringContent.Delete)[u'title'],
-                    self.onDeleteClick))
+                    self.onDeleteClick, [QtCore.Qt.Key_Delete]))
             self.listView.addAction(context_menu_separator(self.listView))
         self.listView.addAction(
             context_menu_action(
                 self.listView, u':/general/general_preview.png',
                 self.plugin.getString(StringContent.Preview)[u'title'],
-                self.onPreviewClick))
+                self.onPreviewClick, [QtCore.Qt.Key_Enter]))
         self.listView.addAction(
             context_menu_action(
                 self.listView, u':/general/general_live.png',
                 self.plugin.getString(StringContent.Live)[u'title'],
-                self.onLiveClick))
+                self.onLiveClick, [QtCore.Qt.ShiftModifier + \
+                QtCore.Qt.Key_Enter, QtCore.Qt.ShiftModifier + \
+                QtCore.Qt.Key_Return]))
         self.listView.addAction(
             context_menu_action(
                 self.listView, u':/general/general_add.png',
                 self.plugin.getString(StringContent.Service)[u'title'],
-                self.onAddClick))
+                self.onAddClick, [QtCore.Qt.Key_Plus, QtCore.Qt.Key_Equal]))
         if self.addToServiceItem:
             self.listView.addAction(
                 context_menu_action(
@@ -293,6 +296,9 @@ class MediaManagerItem(QtGui.QWidget):
         QtCore.QObject.connect(self.listView,
             QtCore.SIGNAL(u'doubleClicked(QModelIndex)'),
             self.onClickPressed)
+        QtCore.QObject.connect(self.listView,
+            QtCore.SIGNAL(u'itemSelectionChanged()'),
+            self.onSelectionChange)
 
     def initialise(self):
         """
@@ -411,7 +417,16 @@ class MediaManagerItem(QtGui.QWidget):
         else:
             self.onPreviewClick()
 
-    def onPreviewClick(self):
+    def onSelectionChange(self):
+        """
+        Allows the change of current item in the list to be actioned
+        """
+        if QtCore.QSettings().value(u'advanced/single click preview',
+            QtCore.QVariant(False)).toBool() and self.quickPreviewAllowed \
+            and self.listView.selectedIndexes():
+            self.onPreviewClick(True)
+
+    def onPreviewClick(self, keepFocus=False):
         """
         Preview an item by building a service item then adding that service
         item to the preview slide controller.
@@ -426,6 +441,8 @@ class MediaManagerItem(QtGui.QWidget):
             if serviceItem:
                 serviceItem.from_plugin = True
                 self.parent.previewController.addServiceItem(serviceItem)
+                if keepFocus:
+                    self.listView.setFocus()
 
     def onLiveClick(self):
         """

openlp/core/ui/advancedtab.py

@@ -67,6 +67,10 @@ class AdvancedTab(SettingsTab):
         self.doubleClickLiveCheckBox = QtGui.QCheckBox(self.uiGroupBox)
         self.doubleClickLiveCheckBox.setObjectName(u'doubleClickLiveCheckBox')
         self.uiLayout.addRow(self.doubleClickLiveCheckBox)
+        self.singleClickPreviewCheckBox = QtGui.QCheckBox(self.uiGroupBox)
+        self.singleClickPreviewCheckBox.setObjectName(
+            u'singleClickPreviewCheckBox')
+        self.uiLayout.addRow(self.singleClickPreviewCheckBox)
         self.expandServiceItemCheckBox = QtGui.QCheckBox(self.uiGroupBox)
         self.expandServiceItemCheckBox.setObjectName(
             u'expandServiceItemCheckBox')
@@ -130,6 +134,8 @@ class AdvancedTab(SettingsTab):
             'Remember active media manager tab on startup'))
         self.doubleClickLiveCheckBox.setText(translate('OpenLP.AdvancedTab',
             'Double-click to send items straight to live'))
+        self.singleClickPreviewCheckBox.setText(translate('OpenLP.AdvancedTab',
+            'Preview items when clicked in Media Manager'))
         self.expandServiceItemCheckBox.setText(translate('OpenLP.AdvancedTab',
             'Expand new service items on creation'))
         self.enableAutoCloseCheckBox.setText(translate('OpenLP.AdvancedTab',
@@ -164,6 +170,9 @@ class AdvancedTab(SettingsTab):
         self.doubleClickLiveCheckBox.setChecked(
             settings.value(u'double click live',
             QtCore.QVariant(False)).toBool())
+        self.singleClickPreviewCheckBox.setChecked(
+            settings.value(u'single click preview',
+            QtCore.QVariant(False)).toBool())
         self.expandServiceItemCheckBox.setChecked(
             settings.value(u'expand service item',
             QtCore.QVariant(False)).toBool())
@@ -193,6 +202,8 @@ class AdvancedTab(SettingsTab):
             QtCore.QVariant(self.mediaPluginCheckBox.isChecked()))
         settings.setValue(u'double click live',
             QtCore.QVariant(self.doubleClickLiveCheckBox.isChecked()))
+        settings.setValue(u'single click preview',
+            QtCore.QVariant(self.singleClickPreviewCheckBox.isChecked()))
         settings.setValue(u'expand service item',
             QtCore.QVariant(self.expandServiceItemCheckBox.isChecked()))
         settings.setValue(u'enable exit confirmation',

openlp/core/ui/servicemanager.py

@@ -1125,6 +1125,9 @@ class ServiceManager(QtGui.QWidget):
             -1 is passed if the value is not set
         """
         item, child = self.findServiceItem()
+        # No items in service
+        if item == -1:
+            return
         if row != -1:
             child = row
         if self.serviceItems[item][u'service_item'].is_valid:

openlp/plugins/custom/lib/mediaitem.py

@@ -46,6 +46,7 @@ class CustomMediaItem(MediaManagerItem):
         self.IconPath = u'custom/custom'
         MediaManagerItem.__init__(self, parent, self, icon)
         self.singleServiceItem = False
+        self.quickPreviewAllowed = True
         # Holds information about whether the edit is remotly triggered and
         # which Custom is required.
         self.remoteCustom = -1

openlp/plugins/images/lib/mediaitem.py

@@ -46,6 +46,7 @@ class ImageMediaItem(MediaManagerItem):
     def __init__(self, parent, plugin, icon):
         self.IconPath = u'images/image'
         MediaManagerItem.__init__(self, parent, self, icon)
+        self.quickPreviewAllowed = True
         QtCore.QObject.connect(Receiver.get_receiver(),
             QtCore.SIGNAL(u'live_theme_changed'), self.liveThemeChanged)
 

openlp/plugins/songs/lib/mediaitem.py

@@ -73,6 +73,7 @@ class SongMediaItem(MediaManagerItem):
         self.remoteSong = -1
         self.editItem = None
         self.whitespace = re.compile(r'\W+', re.UNICODE)
+        self.quickPreviewAllowed = True
 
     def addEndHeaderBar(self):
         self.addToolbarSeparator()