Source code for enamlnative.android.android_fragment
"""
Copyright (c) 2017-2022, CodeLV.
Distributed under the terms of the MIT License.
The full license is in the file LICENSE, distributed with this software.
Created on May 20, 2017
"""
from atom.api import Typed, Value
from enamlnative.widgets.fragment import ProxyFragment
from enamlnative.widgets.view_pager import ProxyPagerFragment
from .android_frame_layout import FrameLayout
from .android_toolkit_object import AndroidToolkitObject
from .android_view import View
from .bridge import JavaBridgeObject, JavaCallback, JavaMethod
package = "androidx.fragment.app"
class FragmentTransaction(JavaBridgeObject):
__nativeclass__ = f"{package}.FragmentTransaction"
commit = JavaMethod(returns=int)
add = JavaMethod(int, f"{package}.Fragment")
replace = JavaMethod(int, f"{package}.Fragment")
class FragmentManager(JavaBridgeObject):
__nativeclass__ = f"{package}.FragmentManager"
beginTransaction = JavaMethod(returns=FragmentTransaction)
class BridgedFragment(JavaBridgeObject):
package = "com.codelv.enamlnative.adapters"
__nativeclass__ = f"{package}.BridgedFragmentStatePagerAdapter$BridgedFragment"
setTitle = JavaMethod(str)
setFragmentListener = JavaMethod(
f"{package}.BridgedFragmentStatePagerAdapter$FragmentListener"
)
onCreateView = JavaCallback(returns=View)
onDestroyView = JavaCallback()
[docs]class AndroidFragment(AndroidToolkitObject, ProxyFragment):
"""An Android implementation of an Enaml ProxyFragment."""
#: A reference to the fragment created by the proxy.
fragment = Typed(BridgedFragment)
#: Future set when ready
ready = Value()
def _default_ready(self):
return self.get_context().create_future()
# -------------------------------------------------------------------------
# Initialization API
# -------------------------------------------------------------------------
[docs] def destroy(self):
"""Custom destructor that deletes the fragment and removes
itself from the adapter it was added to.
"""
#: Destroy fragment
fragment = self.fragment
if fragment:
del self.fragment
super().destroy()
# -------------------------------------------------------------------------
# FragmentListener API
# -------------------------------------------------------------------------
[docs] def on_create_view(self):
"""Trigger the click"""
d = self.declaration
changed = not d.condition
if changed:
d.condition = True
view = self.get_view()
if changed:
self.ready.set_result(True)
return view
def on_destroy_view(self):
d = self.declaration
#: Destroy if we don't want to cache it
if not d.cached:
d.condition = False
#: Delete the reference
if self.widget:
del self.widget
#: Clear the ready state again!
self.ready = self._default_ready()
# -------------------------------------------------------------------------
# ProxyFragment API
# -------------------------------------------------------------------------
[docs] def get_view(self):
"""Get the page to display. If a view has already been created and
is cached, use that otherwise initialize the view and proxy. If defer
loading is used, wrap the view in a FrameLayout and defer add view
until later.
"""
d = self.declaration
if d.cached and self.widget:
return self.widget
if d.defer_loading:
self.widget = FrameLayout(self.get_context())
app = self.get_context()
app.deferred_call(lambda: self.widget.addView(self.load_view(), 0))
else:
self.widget = self.load_view()
return self.widget
def load_view(self):
d = self.declaration
for view in d.items:
if not view.is_initialized:
view.initialize()
if not view.proxy_is_active:
view.activate_proxy()
return view.proxy.widget
def set_cached(self, cached):
pass
def set_defer_loading(self, defer):
pass
[docs]class AndroidPagerFragment(AndroidFragment, ProxyPagerFragment):
"""An Android implementation of an Enaml ProxyPagerFragment."""
[docs] def init_widget(self):
"""Initialize the underlying widget."""
super().init_widget()
d = self.declaration
if d.title:
self.set_title(d.title)
if d.icon:
self.set_icon(d.icon)
# -------------------------------------------------------------------------
# ProxyPagerTabStrip API
# -------------------------------------------------------------------------
def set_title(self, title):
self.fragment.setTitle(title)
def set_icon(self, icon):
pass
# self.adapter.setPageIcon(self.widget, icon)
