# -*- coding: utf-8 -*- # ----------------------------------------------------------------------------- # Copyright (c) 2016-2017 Anaconda, Inc. # # May be copied and distributed freely only as part of an Anaconda or # Miniconda installation. # ----------------------------------------------------------------------------- """ Home Tab. This widget does not perform the actual actions but it emits signals that should be connected to the final controller on the main window. """ # yapf: disable from __future__ import absolute_import, division, print_function # Standard library imports import sys # Third party imports from qtpy.QtCore import Qt, Signal from qtpy.QtWidgets import (QApplication, QHBoxLayout, QLabel, QProgressBar, QVBoxLayout) # Local imports from anaconda_navigator.api.anaconda_api import AnacondaAPI from anaconda_navigator.utils import constants as C from anaconda_navigator.utils.styles import load_style_sheet from anaconda_navigator.widgets import (ButtonNormal, ComboBoxBase, FrameTabContent, FrameTabFooter, FrameTabHeader, LabelBase, SpacerHorizontal, WidgetBase) from anaconda_navigator.widgets.lists.apps import (ListItemApplication, ListWidgetApplication) # yapf: enable # --- Custom widgets used with CSS styling # ----------------------------------------------------------------------------- class ButtonHomeRefresh(ButtonNormal): """QFrame used for CSS styling refresh button inside the Home Tab.""" class ComboHomeEnvironment(ComboBoxBase): """Widget Used for CSS styling.""" class ButtonHomeChannels(ButtonNormal): """Widget Used for CSS styling.""" class LabelHome(LabelBase): """QLabel used for CSS styling the Home Tab label.""" # --- Main widget # ----------------------------------------------------------------------------- class HomeTab(WidgetBase): """Home applications tab.""" # name, prefix, sender sig_item_selected = Signal(object, object, object) # button_widget, sender sig_channels_requested = Signal(object, object) # application_name, command, prefix, leave_path_alone, sender, non_conda sig_launch_action_requested = Signal( object, object, bool, object, object, object ) # action, application_name, version, sender, non_conda sig_conda_action_requested = Signal(object, object, object, object, object) # url sig_url_clicked = Signal(object) # TODO: Connect these signals to have more granularity # [{'name': package_name, 'version': version}...], sender sig_install_action_requested = Signal(object, object) sig_remove_action_requested = Signal(object, object) def __init__(self, parent=None): """Home applications tab.""" super(HomeTab, self).__init__(parent) # Variables self._parent = parent self.api = AnacondaAPI() self.applications = None self.style_sheet = None self.app_timers = None self.current_prefix = None # Widgets self.list = ListWidgetApplication() self.button_channels = ButtonHomeChannels('Channels') self.button_refresh = ButtonHomeRefresh('Refresh') self.combo = ComboHomeEnvironment() self.frame_top = FrameTabHeader(self) self.frame_body = FrameTabContent(self) self.frame_bottom = FrameTabFooter(self) self.label_home = LabelHome('Applications on') self.label_status_action = QLabel('') self.label_status = QLabel('') self.progress_bar = QProgressBar() self.first_widget = self.combo # Widget setup self.setObjectName('Tab') self.progress_bar.setTextVisible(False) self.list.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOn) # Layout layout_top = QHBoxLayout() layout_top.addWidget(self.label_home) layout_top.addWidget(SpacerHorizontal()) layout_top.addWidget(self.combo) layout_top.addWidget(SpacerHorizontal()) layout_top.addWidget(self.button_channels) layout_top.addWidget(SpacerHorizontal()) layout_top.addStretch() layout_top.addWidget(self.button_refresh) self.frame_top.setLayout(layout_top) layout_body = QVBoxLayout() layout_body.addWidget(self.list) self.frame_body.setLayout(layout_body) layout_bottom = QHBoxLayout() layout_bottom.addWidget(self.label_status_action) layout_bottom.addWidget(SpacerHorizontal()) layout_bottom.addWidget(self.label_status) layout_bottom.addStretch() layout_bottom.addWidget(self.progress_bar) self.frame_bottom.setLayout(layout_bottom) layout = QVBoxLayout() layout.addWidget(self.frame_top) layout.addWidget(self.frame_body) layout.addWidget(self.frame_bottom) self.setLayout(layout) # Signals self.list.sig_conda_action_requested.connect( self.sig_conda_action_requested ) self.list.sig_url_clicked.connect(self.sig_url_clicked) self.list.sig_launch_action_requested.connect( self.sig_launch_action_requested ) self.button_channels.clicked.connect(self.show_channels) self.button_refresh.clicked.connect(self.refresh_cards) self.progress_bar.setVisible(False) # --- Setup methods # ------------------------------------------------------------------------- def setup(self, conda_data): """Setup the tab content.""" conda_processed_info = conda_data.get('processed_info') environments = conda_processed_info.get('__environments') applications = conda_data.get('applications') packages = conda_data.get('packages') self.current_prefix = conda_processed_info.get('default_prefix') self.set_environments(environments) self.set_applications(applications, packages) def set_environments(self, environments): """Setup the environments list.""" # Disconnect to avoid triggering the signal when updating the content try: self.combo.currentIndexChanged.disconnect() except TypeError: pass self.combo.clear() fm = self.combo.fontMetrics() widths = [] for i, (env_prefix, env_name) in enumerate(environments.items()): widths.append(fm.width(env_name)) self.combo.addItem(env_name, env_prefix) self.combo.setItemData(i, env_prefix, Qt.ToolTipRole) index = 0 for i, (env_prefix, env_name) in enumerate(environments.items()): if self.current_prefix == env_prefix: index = i break self.combo.setCurrentIndex(index) self.combo.currentIndexChanged.connect(self._item_selected) # Fix combobox width width = max(widths) + 64 self.combo.setMinimumWidth(width) def set_applications(self, applications, packages): """Build the list of applications present in the current conda env.""" apps = self.api.process_apps(applications, prefix=self.current_prefix) all_applications = [] installed_applications = [] not_installed_applications = [] # Check if some installed applications are not on the apps dict # for example when the channel was removed. linked_apps = self.api.conda_linked_apps_info(self.current_prefix) missing_apps = [app for app in linked_apps if app not in apps] for app in missing_apps: apps[app] = linked_apps[app] for app_name in sorted(list(apps.keys())): app = apps[app_name] name = app.get('name') display_name = app.get('display_name', name) package_data = packages.get(app_name) or {} description = app['description'] or package_data.get('summary') item = ListItemApplication( name=name, display_name=display_name, description=description, versions=app['versions'], command=app['command'], image_path=app['image_path'], prefix=self.current_prefix, needs_license=app.get('needs_license', False), non_conda=app.get('non_conda', False), ) if item.installed: installed_applications.append(item) else: not_installed_applications.append(item) all_applications = installed_applications + not_installed_applications self.list.clear() for i in all_applications: self.list.addItem(i) self.list.update_style_sheet(self.style_sheet) self.set_widgets_enabled(True) self.update_status() # --- Other methods # ------------------------------------------------------------------------- def current_environment(self): """Return the current selected environment.""" env_name = self.combo.currentText() return self.api.conda_get_prefix_envname(env_name) def refresh_cards(self): """Refresh application widgets. List widget items sometimes are hidden on resize. This method tries to compensate for that refreshing and repainting on user demand. """ self.list.update_style_sheet(self.style_sheet) self.list.repaint() for item in self.list.items(): if not item.widget.isVisible(): item.widget.repaint() def show_channels(self): """Emit signal requesting the channels dialog editor.""" self.sig_channels_requested.emit(self.button_channels, C.TAB_HOME) def update_list(self, name=None, version=None): """Update applications list.""" self.set_applications() self.label_status.setVisible(False) self.label_status_action.setVisible(False) self.progress_bar.setVisible(False) def update_versions(self, apps=None): """Update applications versions.""" self.items = [] for i in range(self.list.count()): item = self.list.item(i) self.items.append(item) if isinstance(item, ListItemApplication): name = item.name meta = apps.get(name) if meta: versions = meta['versions'] version = self.api.get_dev_tool_version(item.path) item.update_versions(version, versions) # --- Common Helpers (# FIXME: factor out to common base widget) # ------------------------------------------------------------------------- def _item_selected(self, index): """Notify that the item in combo (environment) changed.""" name = self.combo.itemText(index) prefix = self.combo.itemData(index) self.sig_item_selected.emit(name, prefix, C.TAB_HOME) @property def last_widget(self): """Return the last element of the list to be used in tab ordering.""" if self.list.items(): return self.list.items()[-1].widget def ordered_widgets(self, next_widget=None): """Return a list of the ordered widgets.""" ordered_widgets = [ self.combo, self.button_channels, self.button_refresh, ] ordered_widgets += self.list.ordered_widgets() return ordered_widgets def set_widgets_enabled(self, value): """Enable or disable widgets.""" self.combo.setEnabled(value) self.button_channels.setEnabled(value) self.button_refresh.setEnabled(value) for item in self.list.items(): item.button_install.setEnabled(value) item.button_options.setEnabled(value) if value: item.set_loading(not value) def update_items(self): """Update status of items in list.""" if self.list: for item in self.list.items(): item.update_status() def update_status(self, action='', message='', value=None, max_value=None): """Update the application action status.""" # Elide if too big width = QApplication.desktop().availableGeometry().width() max_status_length = round(width * (2.0 / 3.0), 0) msg_percent = 0.70 fm = self.label_status_action.fontMetrics() action = fm.elidedText( action, Qt.ElideRight, round(max_status_length * msg_percent, 0) ) message = fm.elidedText( message, Qt.ElideRight, round(max_status_length * (1 - msg_percent), 0) ) self.label_status_action.setText(action) self.label_status.setText(message) if max_value is None and value is None: self.progress_bar.setVisible(False) else: self.progress_bar.setVisible(True) self.progress_bar.setMaximum(max_value) self.progress_bar.setValue(value) def update_style_sheet(self, style_sheet=None): """Update custom CSS style sheet.""" if style_sheet is None: self.style_sheet = load_style_sheet() else: self.style_sheet = style_sheet self.list.update_style_sheet(style_sheet=self.style_sheet) self.setStyleSheet(self.style_sheet) # --- Local testing # ----------------------------------------------------------------------------- def local_test(): # pragma: no cover """Run local test.""" from anaconda_navigator.utils.qthelpers import qapplication app = qapplication() widget = HomeTab() apps = {} for i in range(6): name = "Package {0}".format(i) application = dict( name=name, prefix='boom', description="Scientific PYthon Development EnviRonment", versions=[str(i), str(i + 1), str(i + 2)], command=None, image_path=None ) apps[name] = application widget.setup(apps) widget.update_style_sheet() widget.showMaximized() sys.exit(app.exec_()) if __name__ == "__main__": # pragma: no cover local_test()