1 files changed, 143 insertions, 0 deletions
diff --git a/src/gui/tasks/modal.py b/src/gui/tasks/modal.py
new file mode 100644
index 0000000..3ccf56e
--- /dev/null
+++ b/src/gui/tasks/modal.py
@@ -0,0 +1,143 @@
+from PyQt5 import QtCore, QtWidgets
+
+import db.tasks
+from model.task import Task, TaskForm
+
+import gui.icons
+
+def dialog(
+        parent: QtWidgets.QWidget,
+        title: str,
+        action_title: str,
+        task: Task,
+        on_validated):
+
+    dialog = QtWidgets.QDialog(parent)
+    dialog.setWindowTitle(title)
+    dialog.setMinimumSize(QtCore.QSize(320, 240))
+
+    layout = QtWidgets.QVBoxLayout(dialog)
+    dialog.setLayout(layout)
+
+    init_name = task.name if task is not None else ''
+    (name_labelled_input, name_input) = labelled_input(dialog, 'Name', init_name)
+    layout.addWidget(name_labelled_input)
+
+    init_tag = task.tag if task is not None else ''
+    (tag_labelled_input, tag_input) = labelled_input(dialog, 'Tag', init_tag)
+    layout.addWidget(tag_labelled_input)
+
+    task_form_edition = TaskFormEdition(
+            init_name,
+            name_input.textChanged,
+            init_tag,
+            tag_input.textChanged)
+
+    layout.addWidget(buttons(
+        parent = dialog,
+        action_title = action_title,
+        task_form_signal = task_form_edition.signal(),
+        on_validate = lambda: validate(dialog, task_form_edition.get(), on_validated),
+        on_cancel = lambda: dialog.reject()))
+
+    return dialog
+
+# Use grid ?
+def labelled_input(parent, label: str, default_value: str):
+    widget = QtWidgets.QWidget(parent)
+
+    layout = QtWidgets.QHBoxLayout(widget)
+    widget.setLayout(layout)
+
+    label = QtWidgets.QLabel(label, widget)
+    layout.addWidget(label)
+
+    line_edit = QtWidgets.QLineEdit(widget)
+    if default_value != None:
+        line_edit.setText(default_value)
+    layout.addWidget(line_edit)
+
+    return (widget, line_edit)
+
+def buttons(parent, action_title, task_form_signal, on_validate, on_cancel):
+    widget = QtWidgets.QWidget(parent)
+    layout = QtWidgets.QHBoxLayout(widget)
+
+    validate = QtWidgets.QPushButton(action_title, widget)
+    validate.setDisabled(True)
+    validate.setIcon(gui.icons.dialog_apply(validate.style()))
+    validate.clicked.connect(on_validate);
+    layout.addWidget(validate)
+
+    def on_task_form_signal(task_form):
+        if validate_form(task_form):
+            validate.setEnabled(True)
+        else:
+            validate.setDisabled(True)
+
+    task_form_signal.connect(on_task_form_signal)
+
+    cancel = QtWidgets.QPushButton('cancel', widget)
+    cancel.setIcon(gui.icons.dialog_cancel(cancel.style()))
+    cancel.clicked.connect(on_cancel)
+    layout.addWidget(cancel)
+
+    return widget
+
+def validate(dialog, task_form: TaskForm, on_validated):
+    valid_form = validate_form(task_form)
+    if valid_form:
+        on_validated(valid_form)
+        dialog.accept()
+
+def clean_form(task_form: TaskForm):
+    return TaskForm(
+        name = task_form.name.strip(),
+        tag = task_form.tag.strip())
+
+def validate_form(task_form: TaskForm):
+    task_form = clean_form(task_form)
+    if task_form.name:
+        return task_form
+    else:
+        return None
+
+#####################
+# Task form edition #
+#####################
+
+class TaskFormEdition:
+    def __init__(self, name, name_signal, tag, tag_signal):
+        self._name = name
+        self._tag = tag
+        self._signal = TaskFormSignal()
+        name_signal.connect(lambda name: self.on_name_signal(name))
+        tag_signal.connect(lambda tag: self.on_tag_signal(tag))
+
+    def get(self):
+        return TaskForm(
+            name = self._name,
+            tag = self._tag)
+
+    def on_name_signal(self, name: str):
+        self._name = name
+        self._signal.emit(self.get())
+
+    def on_tag_signal(self, tag: str):
+        self._tag = tag
+        self._signal.emit(self.get())
+
+    def signal(self):
+        return self._signal
+
+class TaskFormSignal(QtCore.QObject):
+    _signal = QtCore.pyqtSignal(TaskForm, name = 'taskForm')
+
+    def __init__(self):
+        QtCore.QObject.__init__(self)
+
+    def emit(self, taskForm):
+        self._signal.emit(taskForm)
+
+    def connect(self, f):
+        self._signal.connect(f)