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93 lines
3.1 KiB
Python
93 lines
3.1 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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from django.urls import reverse, reverse_lazy
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from plinth import app
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class Menu(app.FollowerComponent):
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"""Component to manage a single menu item."""
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_all_menus = {}
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def __init__(self, component_id, name=None, short_description=None,
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icon=None, url_name=None, url_args=None, url_kwargs=None,
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parent_url_name=None, order=50, advanced=False):
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"""Initialize a new menu item with basic properties.
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name is the label of the menu item.
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short_description is an optional description shown on the menu item.
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icon is the icon to be displayed for the menu item. Choose from the
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Fork Awesome set: https://forkawesome.github.io/Fork-Awesome/icons/
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url_name is the name of url location that will be activated when the
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menu item is selected. This is not optional. url_args and url_kwargs
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are sent to reverse() when resolving url from url_name.
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parent_url_name optionally specifies the menu item under which this
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menu item should become a child.
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order is the numerical rank of this item within the menu. Lower order
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items appear closest to the top/left of the menu. By convention, we use
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the spectrum between 0 and 100 to rank orders, but feel free to
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disregard that. If you need more granularity, don't bother renumbering
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things. Feel free to use fractional orders.
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advanced decides whether to show the menu item only in advanced mode.
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"""
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super().__init__(component_id)
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if not url_name:
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raise ValueError('Valid url_name is expected')
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url = reverse_lazy(url_name, args=url_args, kwargs=url_kwargs)
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self.name = name
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self.short_description = short_description
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self.icon = icon
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self.url = url
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self.order = order
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self.advanced = advanced
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self.items = []
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# Add self to parent menu item
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if parent_url_name:
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parent_menu = self.get(parent_url_name)
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parent_menu.items.append(self)
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# Add self to global list of menu items
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self._all_menus[url] = self
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@classmethod
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def get(cls, urlname, url_args=None, url_kwargs=None):
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"""Return a menu item with given URL name."""
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url = reverse(urlname, args=url_args, kwargs=url_kwargs)
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return cls._all_menus[url]
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def sorted_items(self):
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"""Return menu items in sorted order according to current locale."""
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return sorted(self.items, key=lambda x: (x.order, x.name.lower()))
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def active_item(self, request):
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"""Return the first active item (e.g. submenu) that is found."""
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for item in self.items:
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if request.path.startswith(str(item.url)):
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return item
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return None
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main_menu = None
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def init():
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"""Create main menu and other essential menus."""
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global main_menu
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main_menu = Menu('menu-index', url_name='index')
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Menu('menu-apps', icon='fa-download', url_name='apps',
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parent_url_name='index')
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Menu('menu-system', icon='fa-cog', url_name='system',
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parent_url_name='index')
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