Edit-json: add kerning filter (#3499)

* edit-json: add kerning filter
* fix missing kerning pairs

1 files changed, 49 insertions, 0 deletions

diff --git a/lib/gui/edit_json/combo_prompt.py b/lib/gui/edit_json/combo_prompt.py
new file mode 100644
index 00000000..bebb1947
--- /dev/null
+++ b/lib/gui/edit_json/combo_prompt.py
@@ -0,0 +1,49 @@
+import wx
+
+
+class PromptingComboBox(wx.ComboBox):
+    def __init__(self, parent, choices=[], style=0, **kwargs):
+        if choices is None:
+            choices = []
+        wx.ComboBox.__init__(self, parent, wx.ID_ANY, style=style, choices=choices, **kwargs)
+        self.choices = choices
+        self.Bind(wx.EVT_KEY_DOWN, self.on_button_down)
+        self.Bind(wx.EVT_TEXT, self.on_text_edit)
+        self.Bind(wx.EVT_TEXT_ENTER, self.on_text_edit)
+        self.ignore_text_event = False
+        self.delete_key = False
+        self.found_choice = False
+        self.parent = parent
+
+    def update_choices(self, choices):
+        self.choices = choices
+
+    def on_button_down(self, event):
+        if event.GetKeyCode() == 8:
+            self.delete_key = True
+        event.Skip()
+
+    def on_text_edit(self, event):
+        current_text = event.GetString()
+        if len(current_text) == 0 or current_text == " ":
+            self.delete_key = False
+            self.parent.on_combobox_change(event)
+            return
+        if self.ignore_text_event:
+            self.ignore_text_event = False
+            return
+        if self.delete_key:
+            self.delete_key = False
+            if self.found_choice:
+                current_text = current_text[:-1]
+
+        self.found_choice = False
+        for i, choice in enumerate(self.choices):
+            if choice.startswith(current_text.strip()):
+                self.ignore_text_event = True
+                self.SetValue(choice)
+                self.SetInsertionPoint(len(current_text))
+                self.SetTextSelection(len(current_text), len(choice))
+                self.found_choice = True
+                self.parent.on_combobox_change(event)
+                break