finish separation between plugins and GUIs

plugins/ledger/qt.py

@@ -0,0 +1,66 @@
+from PyQt4.Qt import QApplication, QMessageBox, QDialog, QInputDialog, QLineEdit, QVBoxLayout, QLabel, QThread, SIGNAL
+import PyQt4.QtCore as QtCore
+from electrum_gui.qt.password_dialog import make_password_dialog, run_password_dialog
+
+class Plugin(LedgerPlugin):
+
+    @hook
+    def load_wallet(self, wallet, window):
+        self.wallet = wallet
+        self.wallet.plugin = self
+        if self.handler is None:
+            self.handler = BTChipQTHandler(window)
+        if self.btchip_is_connected():
+            if not self.wallet.check_proper_device():
+                QMessageBox.information(window, _('Error'), _("This wallet does not match your Ledger device"), _('OK'))
+                self.wallet.force_watching_only = True
+        else:
+            QMessageBox.information(window, _('Error'), _("Ledger device not detected.\nContinuing in watching-only mode."), _('OK'))
+            self.wallet.force_watching_only = True
+
+
+class BTChipQTHandler:
+
+    def __init__(self, win):
+        self.win = win
+        self.win.connect(win, SIGNAL('btchip_done'), self.dialog_stop)
+        self.win.connect(win, SIGNAL('btchip_message_dialog'), self.message_dialog)
+        self.win.connect(win, SIGNAL('btchip_auth_dialog'), self.auth_dialog)
+        self.done = threading.Event()
+
+    def stop(self):
+        self.win.emit(SIGNAL('btchip_done'))
+
+    def show_message(self, msg):
+        self.message = msg
+        self.win.emit(SIGNAL('btchip_message_dialog'))
+
+    def prompt_auth(self, msg):
+        self.done.clear()
+        self.message = msg
+        self.win.emit(SIGNAL('btchip_auth_dialog'))
+        self.done.wait()
+        return self.response
+
+    def auth_dialog(self):
+        response = QInputDialog.getText(None, "Ledger Wallet Authentication", self.message, QLineEdit.Password)
+        if not response[1]:
+            self.response = None
+        else:
+            self.response = str(response[0])
+        self.done.set()
+
+    def message_dialog(self):
+        self.d = QDialog()
+        self.d.setModal(1)
+        self.d.setWindowTitle('Ledger')
+        self.d.setWindowFlags(self.d.windowFlags() | QtCore.Qt.WindowStaysOnTopHint)
+        l = QLabel(self.message)
+        vbox = QVBoxLayout(self.d)
+        vbox.addWidget(l)
+        self.d.show()
+
+    def dialog_stop(self):
+        if self.d is not None:
+            self.d.hide()
+            self.d = None