wxGUI/history: add SearchCtrl widget with the ability to search the h…

…istory tree (#3309)

gui/wxpython/history/browser.py

@@ -27,6 +27,7 @@
 )
 from gui_core.forms import GUI
 from gui_core.treeview import CTreeView
+from gui_core.wrap import SearchCtrl
 from history.tree import HistoryBrowserTree
 
 from grass.pydispatch.signal import Signal
@@ -62,11 +63,23 @@ def __init__(
             lambda cmd: self.UpdateHistoryModelByCommand(cmd)
         )
 
+        self.search = SearchCtrl(self)
+        self.search.SetDescriptiveText(_("Search"))
+        self.search.ShowCancelButton(True)
+        self.search.Bind(wx.EVT_TEXT, lambda evt: self.Filter(evt.GetString()))
+        self.search.Bind(wx.EVT_SEARCHCTRL_CANCEL_BTN, lambda evt: self.Filter(""))
+
         self._layout()
 
     def _layout(self):
         """Dialog layout"""
         sizer = wx.BoxSizer(wx.VERTICAL)
+        sizer.Add(
+            self.search,
+            proportion=0,
+            flag=wx.ALL | wx.EXPAND,
+            border=5,
+        )
         sizer.Add(
             self._tree, proportion=1, flag=wx.EXPAND | wx.LEFT | wx.RIGHT, border=5
         )
@@ -95,6 +108,18 @@ def _getSelectedNode(self):
     def _refreshTree(self):
         self._tree.SetModel(self._model.GetModel())
 
+    def Filter(self, text):
+        """Filter history
+
+        :param str text: text string
+        """
+        model = self._model.GetModel()
+        if text:
+            model = self._model.model.Filtered(key=["command"], value=text)
+            self._tree.SetModel(model)
+        else:
+            self._tree.SetModel(model)
+
     def UpdateHistoryModelFromScratch(self):
         """Update the model from scratch and refresh the tree"""
         self._model.CreateModel()