file reorganization with top-level module

electrum/plugins/virtualkeyboard/__init__.py

@@ -0,0 +1,5 @@
+from electrum.i18n import _
+
+fullname = 'Virtual Keyboard'
+description = '%s\n%s' % (_("Add an optional virtual keyboard to the password dialog."), _("Warning: do not use this if it makes you pick a weaker password."))
+available_for = ['qt']

electrum/plugins/virtualkeyboard/qt.py

@@ -0,0 +1,61 @@
+from PyQt5.QtGui import *
+from PyQt5.QtWidgets import (QVBoxLayout, QGridLayout, QPushButton)
+from electrum.plugin import BasePlugin, hook
+from electrum.i18n import _
+import random
+
+
+class Plugin(BasePlugin):
+    vkb = None
+    vkb_index = 0
+
+    @hook
+    def password_dialog(self, pw, grid, pos):
+        vkb_button = QPushButton(_("+"))
+        vkb_button.setFixedWidth(20)
+        vkb_button.clicked.connect(lambda: self.toggle_vkb(grid, pw))
+        grid.addWidget(vkb_button, pos, 2)
+        self.kb_pos = 2
+        self.vkb = None
+
+    def toggle_vkb(self, grid, pw):
+        if self.vkb:
+            grid.removeItem(self.vkb)
+        self.vkb = self.virtual_keyboard(self.vkb_index, pw)
+        grid.addLayout(self.vkb, self.kb_pos, 0, 1, 3)
+        self.vkb_index += 1
+
+    def virtual_keyboard(self, i, pw):
+        i = i % 3
+        if i == 0:
+            chars = 'abcdefghijklmnopqrstuvwxyz '
+        elif i == 1:
+            chars = 'ABCDEFGHIJKLMNOPQRTSUVWXYZ '
+        elif i == 2:
+            chars = '1234567890!?.,;:/%&()[]{}+-'
+
+        n = len(chars)
+        s = []
+        for i in range(n):
+            while True:
+                k = random.randint(0, n - 1)
+                if k not in s:
+                    s.append(k)
+                    break
+
+        def add_target(t):
+            return lambda: pw.setText(str(pw.text()) + t)
+
+        vbox = QVBoxLayout()
+        grid = QGridLayout()
+        grid.setSpacing(2)
+        for i in range(n):
+            l_button = QPushButton(chars[s[i]])
+            l_button.setFixedWidth(25)
+            l_button.setFixedHeight(25)
+            l_button.clicked.connect(add_target(chars[s[i]]))
+            grid.addWidget(l_button, i // 6, i % 6)
+
+        vbox.addLayout(grid)
+
+        return vbox