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LibCore: Make Core::Object properties more dynamic

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Instead of everyone overriding save_to() and set_property() and doing
a pretty asymmetric job of implementing the various properties, let's
add a bit of structure here.

Object properties are now represented by a Core::Property. Properties
are registered with a getter and setter (optional) in constructors.
I've added some convenience macros for creating and registering
properties, but this does still feel a bit bulky. We'll have to
iterate on this and see where it goes.
This commit is contained in:
Andreas Kling 2020-09-15 21:33:37 +02:00
parent 1e96e46a81
commit e2f32b8f9d
23 changed files with 373 additions and 250 deletions
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104
Libraries/LibGUI/Widget.cpp
View file

@ -110,6 +110,17 @@ Widget::Widget()
, m_font(Gfx::Font::default_font())
, m_palette(Application::the()->palette().impl())
{
REGISTER_RECT_PROPERTY("relative_rect", relative_rect, set_relative_rect);
REGISTER_BOOL_PROPERTY("fill_with_background_color", fill_with_background_color, set_fill_with_background_color);
REGISTER_BOOL_PROPERTY("visible", is_visible, set_visible);
REGISTER_BOOL_PROPERTY("focused", is_focused, set_focus);
REGISTER_BOOL_PROPERTY("enabled", is_enabled, set_enabled);
REGISTER_STRING_PROPERTY("tooltip", tooltip, set_tooltip);
REGISTER_SIZE_PROPERTY("preferred_size", preferred_size, set_preferred_size);
REGISTER_INT_PROPERTY("preferred_width", preferred_width, set_preferred_width);
REGISTER_INT_PROPERTY("preferred_height", preferred_height, set_preferred_height);
REGISTER_SIZE_POLICY_PROPERTY("horizontal_size_policy", horizontal_size_policy, set_horizontal_size_policy);
REGISTER_SIZE_POLICY_PROPERTY("vertical_size_policy", vertical_size_policy, set_vertical_size_policy);
}
Widget::~Widget()
@ -774,79 +785,6 @@ void Widget::set_forecolor(const StringView& color_string)
set_foreground_color(color.value());
}
void Widget::save_to(AK::JsonObject& json)
{
json.set("relative_rect", relative_rect().to_string());
json.set("fill_with_background_color", fill_with_background_color());
json.set("tooltip", tooltip());
json.set("visible", is_visible());
json.set("focused", is_focused());
json.set("enabled", is_enabled());
json.set("background_color", background_color().to_string());
json.set("foreground_color", foreground_color().to_string());
json.set("preferred_size", preferred_size().to_string());
json.set("size_policy", String::format("[%s,%s]", to_string(horizontal_size_policy()), to_string(vertical_size_policy())));
Core::Object::save_to(json);
}
bool Widget::set_property(const StringView& name, const JsonValue& value)
{
if (name == "fill_with_background_color") {
set_fill_with_background_color(value.to_bool());
return true;
}
if (name == "tooltip") {
set_tooltip(value.to_string());
return true;
}
if (name == "enable") {
set_enabled(value.to_bool());
return true;
}
if (name == "focused") {
set_focus(value.to_bool());
return true;
}
if (name == "visible") {
set_visible(value.to_bool());
return true;
}
if (name == "horizontal_size_policy") {
auto string = value.to_string();
if (string == "Fill")
set_size_policy(Gfx::Orientation::Horizontal, SizePolicy::Fill);
else if (string == "Fixed")
set_size_policy(Gfx::Orientation::Horizontal, SizePolicy::Fixed);
else
ASSERT_NOT_REACHED();
return true;
}
if (name == "vertical_size_policy") {
auto string = value.to_string();
if (string == "Fill")
set_size_policy(Gfx::Orientation::Vertical, SizePolicy::Fill);
else if (string == "Fixed")
set_size_policy(Gfx::Orientation::Vertical, SizePolicy::Fixed);
else
ASSERT_NOT_REACHED();
return true;
}
if (name == "preferred_height") {
set_preferred_size(preferred_size().width(), value.to_i32());
return true;
}
if (name == "preferred_width") {
set_preferred_size(value.to_i32(), preferred_size().height());
return true;
}
return Core::Object::set_property(name, value);
}
Vector<Widget*> Widget::child_widgets() const
{
Vector<Widget*> widgets;
@ -975,22 +913,9 @@ bool Widget::load_from_json(const JsonObject& json)
return false;
}
auto spacing = layout.get("spacing");
if (spacing.is_number())
this->layout()->set_spacing(spacing.to_i32());
auto margins = layout.get("margins");
if (margins.is_array()) {
if (margins.as_array().size() != 4) {
dbg() << "margins array needs 4 entries";
return false;
}
int m[4];
for (size_t i = 0; i < 4; ++i)
m[i] = margins.as_array().at(i).to_i32();
dbg() << "setting margins " << m[0] << "," << m[1] << "," << m[2] << "," << m[3];
this->layout()->set_margins({ m[0], m[1], m[2], m[3] });
}
layout.for_each_member([&](auto& key, auto& value) {
this->layout()->set_property(key, value);
});
}
auto children = json.get("children");
@ -1045,5 +970,4 @@ Widget* Widget::find_descendant_by_name(const String& name)
});
return found_widget;
}
}