Source code for enamlnative.ios.uikit_slider

"""
Copyright (c) 2017, CodeLV.

Distributed under the terms of the MIT License.

The full license is in the file LICENSE, distributed with this software.

Created on Aug 25, 2017

@author: jrm
"""

from atom.api import Typed, Bool
from enamlnative.widgets.seek_bar import ProxySeekBar

from .bridge import ObjcMethod, ObjcProperty, ObjcCallback
from .uikit_control import UIControl, UiKitControl


[docs]class UISlider(UIControl):
    """
    """
    #: Properties
    minimumValue = ObjcProperty('float')
    maximumValue = ObjcProperty('float')
    continuous = ObjcProperty('bool')
    value = ObjcProperty('float')
    onTintColor = ObjcProperty('UIColor')
    tintColor = ObjcProperty('UIColor')
    thumbTintColor = ObjcProperty('UIColor')
    onImage = ObjcProperty('UIImage')
    offImage = ObjcProperty('UIImage')

    #: Methods
    #: Works but then doesn't let you change it
    setValue = ObjcMethod('float', dict(animated='bool'))

    #: Callbacks
    onValueChanged = ObjcCallback('float')


[docs]class UiKitSlider(UiKitControl, ProxySeekBar):
    """ An UiKit implementation of an Enaml ProxyToolkitObject.

    """

    #: A reference to the toolkit widget created by the proxy.
    widget = Typed(UISlider)

    # -------------------------------------------------------------------------
    # Initialization API
    # -------------------------------------------------------------------------
[docs]    def create_widget(self):
        """ Create the toolkit widget for the proxy object.
        
        """
        self.widget = UISlider()

[docs]    def init_widget(self):
        """ Bind the on property to the checked state """
        super(UiKitSlider, self).init_widget()

        d = self.declaration
        if d.min:
            self.set_min(d.min)
        if d.max:
            self.set_max(d.max)
        if d.progress:
            self.set_progress(d.progress)

        #: A really ugly way to add the target
        #: would be nice if we could just pass the block pointer here :)
        self.get_app().bridge.addTarget(
            self.widget,
            forControlEvents=UISlider.UIControlEventValueChanged,
            andCallback=self.widget.getId(),
            usingMethod="onValueChanged",
            withValues=["value"]#,"selected"]
        )

        self.widget.onValueChanged.connect(self.on_checked_changed)

[docs]    def init_text(self):
        """ A slider has no text!"""
        pass

[docs]    def on_checked_changed(self, value):
        """ See https://stackoverflow.com/questions/19628310/ """
        #: Since iOS decides to call this like 100 times for each defer it
        d = self.declaration
        with self.widget.setValue.suppressed():
            d.progress = int(value)

    # -------------------------------------------------------------------------
    # ProxySlider API
    # -------------------------------------------------------------------------
[docs]    def set_progress(self, progress):
        self.widget.setValue(float(progress), animated=True)

[docs]    def set_secondary_progress(self, progress):
        raise NotImplementedError

[docs]    def set_max(self, value):
        self.widget.maximumValue = float(value)

[docs]    def set_min(self, value):
        self.widget.minimumValue = float(value)

[docs]    def set_key_progress_increment(self, value):
        raise NotImplementedError

[docs]    def set_split_track(self, split):
        raise NotImplementedError