@interface NitCallbackReference: NSObject
// Nit object target of the callbacks from UI events
- @property (nonatomic) Button nit_button;
+ @property (nonatomic) View nit_view;
// Actual callback method
- -(void) nitOnEvent: (UIButton*) sender;
+ -(void) nitOnEvent: (UIView*) sender;
@end
@implementation NitCallbackReference
- -(void) nitOnEvent: (UIButton*) sender {
- Button_on_click(self.nit_button);
+ -(void) nitOnEvent: (UIView*) sender {
+ View_on_ios_event(self.nit_view);
}
@end
@interface UITableViewAndDataSource: NSObject <UITableViewDelegate, UITableViewDataSource>
// Nit object receiving the callbacks
- @property ListLayout nit_list_layout;
+ @property TableView nit_list_layout;
// List of native views added to this list view from the Nit side
@property NSMutableArray *views;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
- return ListLayout_number_of_sections_in_table_view(self.nit_list_layout, tableView);
+ return TableView_number_of_sections_in_table_view(self.nit_list_layout, tableView);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
- return ListLayout_number_of_rows_in_section(self.nit_list_layout, tableView, section);
+ return TableView_number_of_rows_in_section(self.nit_list_layout, tableView, section);
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
- return ListLayout_title_for_header_in_section(self.nit_list_layout, tableView, section);
+ return TableView_title_for_header_in_section(self.nit_list_layout, tableView, section);
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
- return ListLayout_cell_for_row_at_index_path(self.nit_list_layout, tableView, indexPath);
+ return TableView_cell_for_row_at_index_path(self.nit_list_layout, tableView, indexPath);
}
@end
`}
redef class App
redef fun did_finish_launching_with_options
do
+ app_delegate.window = new UIWindow
+ app_delegate.window.background_color = new UIColor.white_color
super
- window.native.make_key_and_visible
+ app_delegate.window.make_key_and_visible
return true
end
+ private fun set_view_controller(window: UIWindow, native: UIViewController)
+ in "ObjC" `{
+ // Set the required root view controller
+ UINavigationController *navController = (UINavigationController*)window.rootViewController;
+
+ if (navController == NULL) {
+ navController = [[UINavigationController alloc]initWithRootViewController:native];
+ navController.edgesForExtendedLayout = UIRectEdgeNone;
+
+ // Must be non-translucent for the controls to be placed under
+ // (as in Y axis) of the navigation bar.
+ navController.navigationBar.translucent = NO;
+
+ window.rootViewController = navController;
+ }
+ else {
+ [navController pushViewController:native animated:YES];
+ }
+
+ native.edgesForExtendedLayout = UIRectEdgeNone;
+ `}
+
redef fun window=(window)
do
- app_delegate.window = window.native
+ set_view_controller(app_delegate.window, window.native)
super
end
end
redef type NATIVE: UIView
redef var enabled = null is lazy
+
+ private fun on_ios_event do end
end
redef class CompositeControl
do
super
- var native_view = view.native
- assert native_view isa UIView
- native_view.remove_from_superview
+ if view isa View then
+ view.native.remove_from_superview
+ end
end
end
redef class Window
- redef type NATIVE: UIWindow
- redef var native = new UIWindow
+ redef type NATIVE: UIViewController
+ redef var native = new UIViewController
- init do native.background_color = new UIColor.white_color
+ # Title of this window
+ fun title: String do return native.title.to_s
+
+ # Set the title of this window
+ fun title=(title: String) do native.title = title.to_nsstring
redef fun add(view)
do
var native_view = view.native
assert native_view isa UIView
- native.add_subview native_view
- fill_whole_window_with(native_view, native)
+ native.view = native_view
end
-
- private fun fill_whole_window_with(native: UIView, window: UIWindow)
- in "ObjC" `{
- // Hard coded borders including the top bar
- // FIXME this may cause problems with retina devices
- [window addConstraints:[NSLayoutConstraint
- constraintsWithVisualFormat: @"V:|-24-[view]-8-|"
- options: 0 metrics: nil views: @{@"view": native}]];
- [window addConstraints:[NSLayoutConstraint
- constraintsWithVisualFormat: @"H:|-8-[view]-8-|"
- options: 0 metrics: nil views: @{@"view": native}]];
-
- // Set the required root view controller
- window.rootViewController = [[UIViewController alloc]initWithNibName:nil bundle:nil];
- window.rootViewController.view = native;
- `}
end
redef class Layout
do
native.alignment = new UIStackViewAlignment.fill
native.distribution = new UIStackViewDistribution.fill_equally
- native.translates_autoresizing_mask_into_constraits = false
# TODO make customizable
native.spacing = 4.0
redef fun text=(text) do native.text = (text or else "").to_nsstring
redef fun text do return native.text.to_s
+
+ redef fun size=(size)
+ do
+ size = size or else 1.0
+ var points = 8.0 + size * 8.0
+ set_size_native(native, points)
+ end
+
+ private fun set_size_native(native: UILabel, points: Float)
+ in "ObjC" `{
+ native.font = [UIFont systemFontOfSize: points];
+ `}
+
+ redef fun align=(align) do set_align_native(native, align or else 0.0)
+
+ private fun set_align_native(native: UILabel, align: Float)
+ in "ObjC" `{
+
+ if (align == 0.5)
+ native.textAlignment = NSTextAlignmentCenter;
+ else if (align < 0.5)
+ native.textAlignment = NSTextAlignmentLeft;
+ else//if (align > 0.5)
+ native.textAlignment = NSTextAlignmentRight;
+ `}
end
# On iOS, check boxes are a layout composed of a label and an `UISwitch`
# `UISwitch` acting as the real check box
var ui_switch: UISwitch is noautoinit
- init do
+ redef fun on_ios_event do notify_observers new ToggleEvent(self)
+
+ init
+ do
# Tweak the layout so it is centered
layout.native.distribution = new UIStackViewDistribution.fill_proportionally
layout.native.alignment = new UIStackViewAlignment.center
var s = new UISwitch
native.add_arranged_subview s
ui_switch = s
+
+ ui_switch.set_callback self
end
redef fun text=(text) do lbl.text = text
redef fun is_checked=(value) do ui_switch.set_on_animated(value, true)
end
+redef class UISwitch
+ # Register callbacks on this switch to be relayed to `sender`
+ private fun set_callback(sender: View)
+ import View.on_ios_event in "ObjC" `{
+
+ NitCallbackReference *ncr = [[NitCallbackReference alloc] init];
+ ncr.nit_view = sender;
+
+ // Pin the objects in both Objective-C and Nit GC
+ View_incr_ref(sender);
+ ncr = (__bridge NitCallbackReference*)CFBridgingRetain(ncr);
+
+ [self addTarget:ncr action:@selector(nitOnEvent:)
+ forControlEvents:UIControlEventValueChanged];
+ `}
+end
+
redef class TextInput
redef type NATIVE: UITextField
init do native.set_callback self
+ redef fun on_ios_event do notify_observers new ButtonPressEvent(self)
+
redef fun text=(text) do if text != null then native.title = text.to_nsstring
redef fun text do return native.current_title.to_s
- private fun on_click do notify_observers new ButtonPressEvent(self)
-
redef fun enabled=(enabled) do native.enabled = enabled or else true
redef fun enabled do return native.enabled
end
redef class UIButton
# Register callbacks on this button to be relayed to `sender`
- private fun set_callback(sender: Button)
- import Button.on_click in "ObjC" `{
+ private fun set_callback(sender: View)
+ import View.on_ios_event in "ObjC" `{
NitCallbackReference *ncr = [[NitCallbackReference alloc] init];
- ncr.nit_button = sender;
+ ncr.nit_view = sender;
// Pin the objects in both Objective-C and Nit GC
- Button_incr_ref(sender);
+ View_incr_ref(sender);
ncr = (__bridge NitCallbackReference*)CFBridgingRetain(ncr);
[self addTarget:ncr action:@selector(nitOnEvent:)
`}
end
+# On iOS, implemented by a `UIStackView` inside a ` UIScrollView`
redef class ListLayout
+ redef type NATIVE: UIScrollView
+ redef var native = new UIScrollView
+
+ # Real container of the subviews, contained within `native`
+ var native_stack_view = new UIStackView
+
+ init
+ do
+ native_stack_view.translates_autoresizing_mask_into_constraits = false
+ native_stack_view.axis = new UILayoutConstraintAxis.vertical
+ native_stack_view.alignment = new UIStackViewAlignment.fill
+ native_stack_view.distribution = new UIStackViewDistribution.fill_equally
+ native_stack_view.spacing = 4.0
+
+ native.add_subview native_stack_view
+ native_add_constraints(native, native_stack_view)
+ end
+
+ private fun native_add_constraints(scroll_view: UIScrollView, stack_view: UIStackView) in "ObjC" `{
+ [scroll_view addConstraints:[NSLayoutConstraint
+ constraintsWithVisualFormat: @"V:|-8-[view]-8-|"
+ options: NSLayoutFormatAlignAllCenterX metrics: nil views: @{@"view": stack_view}]];
+ [scroll_view addConstraints:[NSLayoutConstraint
+ constraintsWithVisualFormat: @"H:|-8-[view]"
+ options: NSLayoutFormatAlignAllCenterX metrics: nil views: @{@"view": stack_view}]];
+ `}
+
+ redef fun add(view)
+ do
+ super
+
+ if view isa View then
+ native_stack_view.add_arranged_subview view.native
+ end
+ end
+end
+
+# iOS specific layout using a `UITableView`, works only with simple children views
+class TableView
+ super CompositeControl
+
redef type NATIVE: UITableView
redef var native = new UITableView(new UITableViewStyle.plain)
redef class UITableView
# Assign `list_view` as `delegate` and `dataSource`, and pin all references in both GCs
- private fun assign_delegate_and_data_source(list_view: ListLayout)
- import ListLayout.number_of_sections_in_table_view,
- ListLayout.number_of_rows_in_section,
- ListLayout.title_for_header_in_section,
- ListLayout.cell_for_row_at_index_path in "ObjC" `{
+ private fun assign_delegate_and_data_source(list_view: TableView)
+ import TableView.number_of_sections_in_table_view,
+ TableView.number_of_rows_in_section,
+ TableView.title_for_header_in_section,
+ TableView.cell_for_row_at_index_path in "ObjC" `{
UITableViewAndDataSource *objc_delegate = [[UITableViewAndDataSource alloc] init];
objc_delegate = (__bridge UITableViewAndDataSource*)CFBridgingRetain(objc_delegate);
objc_delegate.nit_list_layout = list_view;
- ListLayout_incr_ref(list_view);
+ TableView_incr_ref(list_view);
// Set our
self.delegate = objc_delegate;
nitlanguage / nit.git / blobdiff