firmware_flasher: add file selection

src/main/python/firmware_flasher.py

@@ -1,6 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 
-from PyQt5.QtWidgets import QVBoxLayout, QHBoxLayout, QLineEdit, QToolButton, QPlainTextEdit, QProgressBar
+import datetime
+
+from PyQt5.QtGui import QFontDatabase
+from PyQt5.QtWidgets import QVBoxLayout, QHBoxLayout, QLineEdit, QToolButton, QPlainTextEdit, QProgressBar,\
+    QFileDialog, QDialog
 
 from util import tr
 from vial_device import VialBootloader
@@ -11,17 +15,26 @@ class FirmwareFlasher(QVBoxLayout):
     def __init__(self, parent=None):
         super().__init__(parent)
 
+        self.selected_firmware_path = ""
+
         file_selector = QHBoxLayout()
-        file_selector.addWidget(QLineEdit())
+        self.txt_file_selector = QLineEdit()
+        self.txt_file_selector.setReadOnly(True)
+        file_selector.addWidget(self.txt_file_selector)
         btn_select_file = QToolButton()
         btn_select_file.setText(tr("Flasher", "Select file..."))
+        btn_select_file.clicked.connect(self.on_click_select_file)
         file_selector.addWidget(btn_select_file)
         self.addLayout(file_selector)
-        self.addWidget(QPlainTextEdit())
+        self.txt_logger = QPlainTextEdit()
+        self.txt_logger.setReadOnly(True)
+        self.txt_logger.setFont(QFontDatabase.systemFont(QFontDatabase.FixedFont))
+        self.addWidget(self.txt_logger)
         progress_flash = QHBoxLayout()
         progress_flash.addWidget(QProgressBar())
         btn_flash = QToolButton()
         btn_flash.setText(tr("Flasher", "Flash"))
+        btn_flash.clicked.connect(self.on_click_flash)
         progress_flash.addWidget(btn_flash)
         self.addLayout(progress_flash)
 
@@ -29,6 +42,27 @@ class FirmwareFlasher(QVBoxLayout):
 
     def rebuild(self, device):
         self.device = device
+        self.txt_logger.clear()
+        if isinstance(self.device, VialBootloader):
+            self.log("Valid Vial Bootloader device at {}".format(self.device.desc["path"].decode("utf-8")))
 
     def valid(self):
+        # TODO: it is also valid to flash a VialKeyboard which supports optional "vibl-integration" feature
         return isinstance(self.device, VialBootloader)
+
+    def on_click_select_file(self):
+        dialog = QFileDialog()
+        # TODO: this should be .vfw for Vial Firmware
+        dialog.setDefaultSuffix("bin")
+        dialog.setAcceptMode(QFileDialog.AcceptOpen)
+        dialog.setNameFilters(["Vial Firmware (*.bin)"])
+        if dialog.exec_() == QDialog.Accepted:
+            self.selected_firmware_path = dialog.selectedFiles()[0]
+            self.txt_file_selector.setText(self.selected_firmware_path)
+            self.log("Firmware update package: {}".format(self.selected_firmware_path))
+
+    def on_click_flash(self):
+        pass
+
+    def log(self, line):
+        self.txt_logger.appendPlainText("[{}] {}".format(datetime.datetime.now(), line))