Implement bug #810: Search can be as you type or only on Enter/Return.

src/calibre/gui2/__init__.py

@@ -71,6 +71,9 @@ def _config():
             help='Show donation button')
     c.add_opt('asked_library_thing_password', default=False,
             help='Asked library thing password at least once.')
+    c.add_opt('search_as_you_type', default=True,
+            help='Start searching as you type. If this is disabled then seaerch will '
+            'only take place when the Enter or Return key is pressed.')
     return ConfigProxy(c)
 
 config = _config()

src/calibre/gui2/dialogs/config.py

@@ -437,6 +437,7 @@ class ConfigDialog(QDialog, Ui_Dialog):
         self.password.setText(opts.password if opts.password else '')
         self.auto_launch.setChecked(config['autolaunch_server'])
         self.systray_icon.setChecked(config['systray_icon'])
+        self.search_as_you_type.setChecked(config['search_as_you_type'])
         self.sync_news.setChecked(config['upload_news_to_device'])
         self.delete_news.setChecked(config['delete_news_from_library_on_upload'])
         p = {'normal':0, 'high':1, 'low':2}[prefs['worker_process_priority']]
@@ -707,6 +708,7 @@ class ConfigDialog(QDialog, Ui_Dialog):
         sc.set('max_cover', mcs)
         config['delete_news_from_library_on_upload'] = self.delete_news.isChecked()
         config['upload_news_to_device'] = self.sync_news.isChecked()
+        config['search_as_you_type'] = self.search_as_you_type.isChecked()
         fmts = []
         for i in range(self.viewer.count()):
             if self.viewer.item(i).checkState() == Qt.Checked:

src/calibre/gui2/dialogs/config.ui

@@ -8,7 +8,7 @@
     <x>0</x>
     <y>0</y>
     <width>800</width>
-    <height>557</height>
+    <height>583</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -426,6 +426,16 @@
            </property>
           </widget>
          </item>
+         <item>
+          <widget class="QCheckBox" name="search_as_you_type">
+           <property name="text">
+            <string>Search as you type</string>
+           </property>
+           <property name="checked">
+            <bool>true</bool>
+           </property>
+          </widget>
+         </item>
          <item>
           <widget class="QCheckBox" name="sync_news">
            <property name="text">
@@ -591,15 +601,6 @@
           </layout>
          </item>
         </layout>
-        <zorder>roman_numerals</zorder>
-        <zorder>groupBox_2</zorder>
-        <zorder>systray_icon</zorder>
-        <zorder>sync_news</zorder>
-        <zorder>delete_news</zorder>
-        <zorder>separate_cover_flow</zorder>
-        <zorder>systray_notifications</zorder>
-        <zorder></zorder>
-        <zorder></zorder>
        </widget>
        <widget class="QWidget" name="page_6">
         <layout class="QGridLayout" name="gridLayout_6">

src/calibre/gui2/library.py

@@ -1095,6 +1095,7 @@ class SearchBox(QLineEdit):
         QLineEdit.__init__(self, parent)
         self.help_text = help_text
         self.initial_state = True
+        self.as_you_type = True
         self.default_palette = QApplication.palette(self)
         self.gray = QPalette(self.default_palette)
         self.gray.setBrush(QPalette.Text, QBrush(QColor('gray')))
@@ -1123,6 +1124,9 @@ class SearchBox(QLineEdit):
         if self.initial_state:
             self.normalize_state()
             self.initial_state = False
+        if not self.as_you_type:
+            if event.key() in (Qt.Key_Return, Qt.Key_Enter):
+                self.do_search()
         QLineEdit.keyPressEvent(self, event)
 
     def mouseReleaseEvent(self, event):
@@ -1132,6 +1136,7 @@ class SearchBox(QLineEdit):
         QLineEdit.mouseReleaseEvent(self, event)
 
     def text_edited_slot(self, text):
+        if self.as_you_type:
             text = qstring_to_unicode(text) if isinstance(text, QString) else unicode(text)
             self.prev_text = text
             self.timer = self.startTimer(self.__class__.INTERVAL)
@@ -1139,6 +1144,9 @@ class SearchBox(QLineEdit):
     def timerEvent(self, event):
         self.killTimer(event.timerId())
         if event.timerId() == self.timer:
+            self.do_search()
+
+    def do_search(self):
         text = qstring_to_unicode(self.text())
         refinement = text.startswith(self.prev_search) and ':' not in text
         self.prev_search = text
@@ -1161,3 +1169,6 @@ class SearchBox(QLineEdit):
         self.end(False)
         self.initial_state = False
 
+    def search_as_you_type(self, enabled):
+        self.as_you_type = enabled
+

src/calibre/gui2/main.py

@@ -148,6 +148,7 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
             self.system_tray_icon.hide()
         else:
             self.system_tray_icon.show()
+        self.search.search_as_you_type(config['search_as_you_type'])
         self.system_tray_menu = QMenu(self)
         self.restore_action = self.system_tray_menu.addAction(
                 QIcon(':/images/page.svg'), _('&Restore'))
@@ -1422,6 +1423,7 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
         self.content_server = d.server
         if d.result() == d.Accepted:
             self.tool_bar.setIconSize(config['toolbar_icon_size'])
+            self.search.search_as_you_type(config['search_as_you_type'])
             self.tool_bar.setToolButtonStyle(
                     Qt.ToolButtonTextUnderIcon if \
                             config['show_text_in_toolbar'] else \