stacking-box.zc

实现树形结构

//[of]:description
//[c]Superposition of boxes, with only one visible
//[cf]
//[of]:license
//[c]Code Browser - a folding text editor for programmers
//[c]Copyright (C) 2003-07 Marc Kerbiquet
//[c]
//[c]This program is free software; you can redistribute it and/or modify
//[c]it under the terms of the GNU General Public License as published by
//[c]the Free Software Foundation; either version 2 of the License, or
//[c](at your option) any later version.
//[c]
//[c]This program is distributed in the hope that it will be useful,
//[c]but WITHOUT ANY WARRANTY; without even the implied warranty of
//[c]MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//[c]GNU General Public License for more details.
//[c]
//[c]You should have received a copy of the GNU General Public License
//[c]along with this program; if not, write to the Free Software
//[c]Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//[cf]
//[of]:imports
//[c]
import "base/types"
import "base/memory-allocator"
import "graphics/geometry"
import "graphics/graphics"
import "user/box"
import "user/container-box"
//[cf]
//[c]
//[of]:stacking box
//[of]:type
public struct stacking box : local container box
	// empty
end
//[cf]
//[of]:instance creation
//[of]:new stacking box (parent box)
public func new stacking box (parent: box)

	equ s = sizeof local stacking box
	def b = allocate memory (s): stacking box
	initialize (b, parent)
	return b

end
//[cf]
//[cf]
//[of]:visibility
//[of]:show (child box)
//[c]Shows the given child box
//[c]
//[c]	All other children are hidden.
//[c]
public func show (m: stacking box, c: box)

	show (c)

	each child (m) ? child
		if c <> child
			hide (child)
		end
	end

end			
//[cf]
//[cf]
//[c]
//[of]:restricted
//[of]:initialize (parent box)
public func initialize (m: stacking box, parent: box)

	initialize (super (m), parent)
	class (m) = stacking box class

end
//[cf]
//[cf]
//[cf]
//[of]:stacking box class
//[of]:type
public struct stacking box class : local container box class
	// empty
end
//[cf]
//[of]:stacking box class
public func stacking box class

	def c = the stacking box class
	if ~ initialized
		initialized = true
		c . copy (container box class)
		c . compute min size = ^min size of union (box)
		c . on size = ^adjust to parent (box)
		c . on focus = ^focus to first visible (box, event)
		c . adjust = ^adjust to parent (box)
	end
	return c

end

private def initialized = false
private def the stacking box class : local stacking box class
//[cf]
//[cf]