lib/glimmer/swt/expand_item_proxy.rb
# Copyright (c) 2007-2024 Andy Maleh
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
require 'glimmer/swt/widget_proxy'
require 'glimmer/swt/swt_proxy'
module Glimmer
module SWT
# Proxy for org.eclipse.swt.widgets.ExpandItem
#
# Functions differently from other widget proxies.
#
# Glimmer instantiates an SWT Composite alongside the SWT ExpandItem
# and returns it for `#swt_widget` to allow adding widgets into it.
#
# In order to get the SWT ExpandItem object, one must call `#swt_expand_item`.
#
# Behind the scenes, this creates a tab item widget proxy separately from a composite that
# is set as the control of the tab item and `#swt_widget`.
#
# In order to retrieve the tab item widget proxy, one must call `#widget_proxy`
#
# Follows the Proxy Design Pattern
class ExpandItemProxy < WidgetProxy
ATTRIBUTES = ['text', 'height', 'expanded']
include_package 'org.eclipse.swt.widgets'
attr_reader :widget_proxy, :swt_expand_item
def initialize(parent, style, &contents)
super("composite", parent, style, &contents)
layout = FillLayout.new(SWTProxy[:vertical])
layout.marginWidth = 0
layout.marginHeight = 0
layout.spacing = 0
swt_widget.layout = layout
auto_exec do
@widget_proxy = SWT::WidgetProxy.new('expand_item', parent, style)
@swt_expand_item = @widget_proxy.swt_widget
@swt_expand_item.control = swt_widget
@swt_expand_item.expanded = true
end
end
def post_add_content
auto_exec do
@swt_expand_item.setHeight(swt_widget.computeSize(SWTProxy[:default], SWTProxy[:default]).y) unless @swt_expand_item.getHeight > 0
end
end
def has_attribute?(attribute_name, *args)
if ATTRIBUTES.include?(attribute_name.to_s)
true
else
super(attribute_name, *args)
end
end
def set_attribute(attribute_name, *args)
if ATTRIBUTES.include?(attribute_name.to_s)
@widget_proxy.set_attribute(attribute_name, *args)
else
super(attribute_name, *args)
end
end
def get_attribute(attribute_name)
if ATTRIBUTES.include?(attribute_name.to_s)
@widget_proxy.get_attribute(attribute_name)
else
super(attribute_name)
end
end
def dispose
auto_exec do
swt_expand_item.setControl(nil)
swt_widget.dispose
swt_expand_item.dispose
end
end
end
end
end