/* Part of XPCE --- The SWI-Prolog GUI toolkit Author: Jan Wielemaker and Anjo Anjewierden E-mail: jan@swi.psy.uva.nl WWW: http://www.swi.psy.uva.nl/projects/xpce/ Copyright (c) 1985-2002, University of Amsterdam All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ :- module(man_topic, []). :- use_module(library(pce)). :- require([ get_chain/3 , member/2 , send_list/3 ]). :- pce_begin_class(man_topic_browser, man_frame, "Topic browser"). variable(topics, man_module, get, "`Topic' manual module"). variable(selection, man_topic_card*, get, "Selected topic"). initialise(TB, Manual:man_manual) :-> "Create from Manual":: send(TB, send_super, initialise, Manual, 'Topic Browser'), get(Manual, module, topics, @on, Module), send(TB, slot, topics, Module), picture(Picture, Module), dialog(Dialog), send(TB, append, Picture), send(Dialog, below, Picture), send(TB, edit_mode, Manual?edit_mode), send(TB, expand_node, TB?tree?root), send(TB, open). /******************************** * DIALOG * ********************************/ dialog(D) :- new(D, dialog), new(TB, D?frame), send(D, append, new(TN, text_item(name, '', @nil))), send(D, append, new(TS, text_item(summary, '', if(TN?selection \== '', message(D?create_member, execute))))), send(TN, length, 15), send(TS, length, 40), send(D, append, button(create, block(message(TB, create_topic, TN?selection, TS?selection), message(TN, clear), message(TS, clear), message(TN, caret)))), send(D, append, button(help, message(TB, help))), send(D, append, button(quit, message(TB, quit))). /******************************** * COMMUNICATION * ********************************/ edit_mode(TB, Val:bool) :-> "Switch edit mode on/off":: get(TB, dialog_member, Dialog), send_list([ Dialog?create_member , Dialog?name_member , Dialog?summary_member ], active, Val). node(TB, Card:man_topic_card, Node) :<- "Find node displaying card":: get(TB?tree, find, @arg1?card == Card, Node). selected(TB, Obj:object*) :-> "Set the selection":: get(TB, tree, Tree), send(Tree, for_all, message(@arg1, inverted, @off)), ( Obj \== @nil, send(Obj, instance_of, man_topic_card) -> send(TB, slot, selection, Obj), ( get(TB, node, Obj, Node) -> send(Node, inverted, @on) ; true ) ; send(TB, slot, selection, @nil) ). release_selection(TB) :-> send(TB, selected, @nil). unrelated(TB, From:object*, Rel:name, To:object*) :-> "Trap delated relations":: send(TB, related, From, Rel, To). related(TB, From:object*, Rel:name, _To:object*) :-> "Trap added relations":: Rel == see_also, get(TB, current, From), send(TB, update_related). /******************************** * EDITING * ********************************/ create_topic(TB, Name:string, Summary:string, Super:[man_topic_card]) :-> "Add a new topic from name and summary":: ( Super == @default -> get(TB, selection, SuperTopic), ( SuperTopic == @nil -> send(@display, inform, 'Please first select a super-topic'), fail ; true ) ; SuperTopic = Super ), send(Name, strip), ( get(Name, size, 0) -> send(@display, inform, 'Please enter a topic name first') ; new(Topic, man_topic_card(TB?topics, Name)), send(Topic, store, summary, Summary), send(SuperTopic, relate, subs, Topic), send(Topic, relate, super, SuperTopic), get(TB, node, SuperTopic, SuperNode), send(SuperNode, font, font(helvetica, bold, 12)), add_card(SuperNode, Topic) ). rename_node(TB, Node:node) :-> "Rename node to name in dialog":: get(TB?dialog_member?name_member, selection, NewName), ( NewName == '' -> send(@display, inform, 'First type a name in ''Name''') ; send(Node?card, store, name, NewName), send(Node, string, NewName), send(TB?dialog_member?name_member, clear) ), get(TB?dialog_member?summary_member, selection, NewName), ( NewSumm == '' -> true ; send(Node?card, store, summary, NewSumm), send(TB?dialog_member?summary_member, clear) ). delete_card(_TB, Node:node) :-> "Destroy a card":: get(Node, card, Card), send(@display, confirm, 'Really delete card `%s''', Card?name), ( get(Card, related, subs, Subs), \+ send(Subs, empty) -> send(@display, inform, 'Only leaf-nodes can be deleted') ; send(Node, delete_tree), send(Card, free) ). son_node(TB, Node:node) :-> "Relate node to selection":: get(TB, selection, Selection), Selection \== @nil, send(Selection, relate, subs, Node?card), send(Node?card, relate, super, Selection), send(?(TB, node, Selection), son, Node). remove_son_node(TB, Node:node) :-> "Unrelate a node from selection":: get(TB, selection, Selection), Selection \== @nil, send(Selection, unrelate, subs, Node?card), send(Node?card, unrelate, super, Selection), send(?(TB, node, Selection), unrelate, Node). below_node(TB, Node:node) :-> "Move node below selection or to be the first":: get_chain(Node, parents, Parents), ( get(TB, selection, Selection), Selection \== @nil, get(TB, node, Selection, SelectedNode), member(Parent, Parents), send(Parent?sons, member, SelectedNode) -> send(Parent?card, move_relation_after, subs, Node?card, Selection), send(Node, move_after, SelectedNode) ; member(Parent, Parents) -> send(Parent?card, move_relation_after, subs, Node?card), send(Node, move_after) ), send(TB, request_selection, Node?card, @off). /******************************** * PICTURE * ********************************/ :- pce_global(@man_topic_node_handler, make_man_topic_node_handler). make_man_topic_node_handler(H) :- new(TB, @arg1?frame), new(Manual, TB?manual), new(CanEdit, Manual?edit_mode == @on), new(Selection, Manual?selection), Node = @arg1, new(Card, Node?card), new(P, popup), send_list(P, append, [ menu_item(select, message(TB, request_selection, Card, @on), @default, @on, Selection \== Card) , menu_item(expand, message(TB, expand_node, Node), @default, @off, and(message(Node?sons, empty), ?(Card, man_related, subs))) , menu_item(expand_tree, message(TB, expand_tree, Node), @default, @off, ?(Card, man_related, subs)) , menu_item(collapse_node, message(TB, collapse_node, Node), @default, @on, not(message(Node?sons, empty))) , menu_item(relate, message(TB, request_relate, Card), @default, @off, and(CanEdit, Selection \== @nil, Selection \== Card, not(message(Card, man_related, see_also, Selection)))) , menu_item(rename, message(TB, rename_node, Node), @default, @on, and(CanEdit, TB?dialog_member?name_member?selection \== '')) , menu_item(move_below, message(TB, below_node, Node), @default, @off, CanEdit) , menu_item(make_daughter, message(TB, son_node, Node), @default, @off, CanEdit) , menu_item(remove_daughter, message(TB, remove_son_node, Node), @default, @on, CanEdit) , menu_item(delete_card, message(TB, delete_card, Node), @default, @off, CanEdit) ]), HNode = @receiver, new(HTool, HNode?frame), new(H, handler_group(popup_gesture(P), click_gesture(left, c, single, message(HTool, below_node, HNode)), click_gesture(left, '', single, message(HTool, request_selection, HNode?card, @off)), click_gesture(left, '', double, message(HTool, request_selection, HNode?card, @on)))). picture(P, Topics) :- new(P, picture), ( get(Topics, card, root, Root) -> true ; new(Root, man_topic_card(Topics, 'Contents', root)), send(Root, store, summary, string("Root of the topic index")) ), create_node(Root, Node), send(P, display, new(T, tree(Node))), send(T, level_gap, 25), send(T, node_handler, @man_topic_node_handler). create_node(Card, Node) :- ( get(Card, related, subs, Subs), Subs \== @nil, \+ send(Subs, empty) -> Font = font(helvetica, bold, 12) ; Font = font(helvetica, roman, 12) ), new(Node, node(text(Card?name, left, Font))), send(Node, attribute, attribute(card, Card)). tree(TB, Tree) :<- "Get the associated tree object":: get(TB?picture_member, tree_member, Tree). expand_node(_TB, Node:node) :-> "Make all sub-topics visible":: ( get(Node?card, related, subs, SubCards) -> send(SubCards, for_all, message(@prolog, add_card, Node, @arg1)) ; true ). add_card(Node, Card) :- ( get(Node?sons, find, @arg1?card == Card, _) -> true ; create_node(Card, Sub), send(Node, son, Sub) ). expand_tree(TB, Node:node) :-> "Expand all nodes below this one":: send(TB, expand_node, Node), send(Node?sons, for_all, message(TB, expand_tree, @arg1)). collapse_node(_TB, Node:node) :-> "Undisplay all subnodes":: send(Node?sons, for_all, message(@arg1, delete_tree)). :- pce_end_class.