* http://cs.unibo.it/helm/.
*)
+(* $Id$ *)
+
open Printf
-open MatitaTypes
+open GrafiteTypes
open MatitaGtkMisc
+open MatitaGuiTypes
module Stack = Continuationals.Stack
let distance = sqrt (((x2 -. x1) ** 2.) +. ((y2 -. y1) ** 2.)) in
(distance < 4.)
+let xlink_ns = Gdome.domString "http://www.w3.org/1999/xlink"
+let helm_ns = Gdome.domString "http://www.cs.unibo.it/helm"
let href_ds = Gdome.domString "href"
let xref_ds = Gdome.domString "xref"
+let domImpl = Gdome.domImplementation ()
+
+ (** Gdome.element of a MathML document whose rendering should be blank. Used
+ * by cicBrowser to render "about:blank" document *)
+let empty_mathml = lazy (
+ domImpl#createDocument ~namespaceURI:(Some DomMisc.mathml_ns)
+ ~qualifiedName:(Gdome.domString "math") ~doctype:None)
+
+let empty_boxml = lazy (
+ domImpl#createDocument ~namespaceURI:(Some DomMisc.boxml_ns)
+ ~qualifiedName:(Gdome.domString "box") ~doctype:None)
+
+ (** shown for goals closed by side effects *)
+let closed_goal_mathml = lazy (
+ domImpl#createDocumentFromURI ~uri:BuildTimeConf.closed_xml ())
+
(* ids_to_terms should not be passed here, is just for debugging *)
let find_root_id annobj id ids_to_father_ids ids_to_terms ids_to_inner_types =
let find_parent id ids =
text#get_data#to_string
with GdomeInit.DOMCastException _ -> "")
+let name_of_hypothesis = function
+ | Some (Cic.Name s, _) -> s
+ | _ -> assert false
+
+let id_of_node (node: Gdome.element) =
+ let xref_attr =
+ node#getAttributeNS ~namespaceURI:helm_ns ~localName:xref_ds in
+ try
+ List.hd (HExtlib.split ~sep:' ' xref_attr#to_string)
+ with Failure _ -> assert false
+
+type selected_term =
+ | SelTerm of Cic.term * string option (* term, parent hypothesis (if any) *)
+ | SelHyp of string * Cic.context (* hypothesis, context *)
+
class clickableMathView obj =
let text_width = 80 in
+let dummy_loc = HExtlib.dummy_floc in
object (self)
inherit GMathViewAux.multi_selection_math_view obj
val mutable selection_changed = false
method private selection_get_cb ctxt ~info ~time =
- (match self#get_selections with
- | [] -> ()
- | node :: _ -> ctxt#return (self#string_of_node node))
+ let text =
+ match ctxt#target with
+ | "PATTERN" -> self#text_of_selection `Pattern
+ | "TERM" | _ -> self#text_of_selection `Term
+ in
+ match text with
+ | None -> ()
+ | Some s -> ctxt#return s
+
+ method private text_of_selection fmt =
+ match self#get_selections with
+ | [] -> None
+ | node :: _ -> Some (self#string_of_node ~paste_kind:fmt node)
method private selection_clear_cb sel_event =
self#remove_selections;
+ (GData.clipboard Gdk.Atom.clipboard)#clear ();
false
method private button_press_cb gdk_button =
self#popup_contextual_menu (GdkEvent.Button.time gdk_button);
false
+ (** @return a pattern structure which contains pretty printed terms *)
+ method private tactic_text_pattern_of_selection =
+ match self#get_selections with
+ | [] -> assert false (* this method is invoked only if there's a sel. *)
+ | node :: _ ->
+ let id = id_of_node node in
+ let cic_info, unsh_sequent = self#get_cic_info id in
+ match self#get_term_by_id cic_info id with
+ | SelTerm (t, father_hyp) ->
+ let sequent = self#sequent_of_id ~paste_kind:`Pattern id in
+ let text = self#string_of_cic_sequent sequent in
+ (match father_hyp with
+ | None -> None, [], Some text
+ | Some hyp_name -> None, [ hyp_name, text ], None)
+ | SelHyp (hyp_name, _ctxt) -> None, [ hyp_name, "%" ], None
+
method private popup_contextual_menu time =
- match self#string_of_selection with
- | None -> ()
- | Some s ->
- let clipboard = GData.clipboard Gdk.Atom.clipboard in
- let menu = GMenu.menu () in
- let copy_menu_item =
- GMenu.image_menu_item
- ~label:"_Copy" ~stock:`COPY ~packing:menu#append ()
- in
- connect_menu_item copy_menu_item (fun () -> clipboard#set_text s);
- menu#popup ~button:right_button ~time
+ let menu = GMenu.menu () in
+ let add_menu_item ?(menu = menu) ?stock ?label () =
+ GMenu.image_menu_item ?stock ?label ~packing:menu#append () in
+ let check = add_menu_item ~label:"Check" () in
+ let reductions_menu_item = GMenu.menu_item ~label:"βδιζ-reduce" () in
+ menu#append reductions_menu_item;
+ let reductions = GMenu.menu () in
+ reductions_menu_item#set_submenu reductions;
+ let normalize = add_menu_item ~menu:reductions ~label:"Normalize" () in
+ let reduce = add_menu_item ~menu:reductions ~label:"Reduce" () in
+ let simplify = add_menu_item ~menu:reductions ~label:"Simplify" () in
+ let whd = add_menu_item ~menu:reductions ~label:"Weak head" () in
+ menu#append (GMenu.separator_item ());
+ let copy = add_menu_item ~stock:`COPY () in
+ let gui = get_gui () in
+ List.iter (fun item -> item#misc#set_sensitive gui#canCopy)
+ [ copy; check; normalize; reduce; simplify; whd ];
+ let reduction_action kind () =
+ let pat = self#tactic_text_pattern_of_selection in
+ let statement =
+ let loc = HExtlib.dummy_floc in
+ "\n" ^
+ GrafiteAstPp.pp_executable ~term_pp:(fun s -> s)
+ ~lazy_term_pp:(fun _ -> assert false) ~obj_pp:(fun _ -> assert false)
+ (GrafiteAst.Tactical (loc,
+ GrafiteAst.Tactic (loc, GrafiteAst.Reduce (loc, kind, pat)),
+ Some (GrafiteAst.Semicolon loc))) in
+ (MatitaScript.current ())#advance ~statement () in
+ connect_menu_item copy gui#copy;
+ connect_menu_item normalize (reduction_action `Normalize);
+ connect_menu_item reduce (reduction_action `Reduce);
+ connect_menu_item simplify (reduction_action `Simpl);
+ connect_menu_item whd (reduction_action `Whd);
+ menu#popup ~button:right_button ~time
method private button_release_cb gdk_button =
- let clipboard = GData.clipboard Gdk.Atom.primary in
if GdkEvent.Button.button gdk_button = left_button then begin
let button_release_x = GdkEvent.Button.x gdk_button in
let button_release_y = GdkEvent.Button.y gdk_button in
(match self#get_element_at x y with
| None -> ()
| Some elt ->
- let namespaceURI = DomMisc.xlink_ns in
let localName = href_ds in
- if elt#hasAttributeNS ~namespaceURI ~localName then
+ if elt#hasAttributeNS ~namespaceURI:xlink_ns ~localName then
self#invoke_href_callback
- (elt#getAttributeNS ~namespaceURI ~localName)#to_string
+ (elt#getAttributeNS ~namespaceURI:xlink_ns
+ ~localName)#to_string
gdk_button
else
ignore (self#action_toggle elt));
List.iter
(fun uri ->
let menu_item =
- GMenu.menu_item ~label:uri ~packing:menu#append ()
- in
+ GMenu.menu_item ~label:uri ~packing:menu#append () in
connect_menu_item menu_item (fun () -> f uri))
uris;
menu#popup ~button ~time)
method private choose_selection_cb gdome_elt =
- let (gui: MatitaGuiTypes.gui) = get_gui () in
- let clipboard = GData.clipboard Gdk.Atom.primary in
let set_selection elt =
+ let misc = self#coerce#misc in
self#set_selection (Some elt);
- self#coerce#misc#add_selection_target
- ~target:(Gdk.Atom.name Gdk.Atom.string) Gdk.Atom.primary;
- ignore (self#coerce#misc#grab_selection Gdk.Atom.primary)
+ misc#add_selection_target ~target:"STRING" Gdk.Atom.primary;
+ ignore (misc#grab_selection Gdk.Atom.primary);
in
let rec aux elt =
- if (elt#getAttributeNS ~namespaceURI:DomMisc.helm_ns
+ if (elt#getAttributeNS ~namespaceURI:helm_ns
~localName:xref_ds)#to_string <> ""
then
set_selection elt
with GdomeInit.DOMCastException _ -> ()
in
(match gdome_elt with
- | Some elt when (elt#getAttributeNS ~namespaceURI:DomMisc.xlink_ns
+ | Some elt when (elt#getAttributeNS ~namespaceURI:xlink_ns
~localName:href_ds)#to_string <> "" ->
set_selection elt
| Some elt -> aux elt
method update_font_size = self#set_font_size !current_font_size
- method private get_term_by_id context cic_info id =
- let ids_to_terms, ids_to_hypotheses, _, _, _ = cic_info in
+ (** find a term by id from stored CIC infos @return either `Hyp if the id
+ * correspond to an hypothesis or `Term (cic, hyp) if the id correspond to a
+ * term. In the latter case hyp is either None (if the term is a subterm of
+ * the sequent conclusion) or Some hyp_name if the term belongs to an
+ * hypothesis *)
+ method private get_term_by_id cic_info id =
+ let unsh_item, ids_to_terms, ids_to_hypotheses, ids_to_father_ids, _, _ =
+ cic_info in
+ let rec find_father_hyp id =
+ if Hashtbl.mem ids_to_hypotheses id
+ then Some (name_of_hypothesis (Hashtbl.find ids_to_hypotheses id))
+ else
+ let father_id =
+ try Hashtbl.find ids_to_father_ids id
+ with Not_found -> assert false in
+ match father_id with
+ | Some id -> find_father_hyp id
+ | None -> None
+ in
try
- `Term (Hashtbl.find ids_to_terms id)
+ let term = Hashtbl.find ids_to_terms id in
+ let father_hyp = find_father_hyp id in
+ SelTerm (term, father_hyp)
with Not_found ->
try
let hyp = Hashtbl.find ids_to_hypotheses id in
+ let _, context, _ =
+ match unsh_item with Some seq -> seq | None -> assert false in
let context' = MatitaMisc.list_tl_at hyp context in
- `Hyp context'
+ SelHyp (name_of_hypothesis hyp, context')
with Not_found -> assert false
method private find_obj_conclusion id =
match self#cic_info with
| None
- | Some (_, _, _, _, None) -> assert false
- | Some (ids_to_terms, _, ids_to_father_ids, ids_to_inner_types, Some annobj) ->
+ | Some (_, _, _, _, _, None) -> assert false
+ | Some (_, ids_to_terms, _, ids_to_father_ids, ids_to_inner_types, Some annobj) ->
let id =
find_root_id annobj id ids_to_father_ids ids_to_terms ids_to_inner_types
in
(try Hashtbl.find ids_to_terms id with Not_found -> assert false)
- method private string_of_node node =
- if node#hasAttributeNS ~namespaceURI:DomMisc.helm_ns ~localName:xref_ds
- then self#string_of_id_node node
+ method private string_of_node ~(paste_kind:paste_kind) node =
+ if node#hasAttributeNS ~namespaceURI:helm_ns ~localName:xref_ds
+ then
+ let id = id_of_node node in
+ self#string_of_cic_sequent (self#sequent_of_id ~paste_kind id)
else string_of_dom_node node
- method private string_of_id_node node =
- let get_id (node: Gdome.element) =
- let xref_attr =
- node#getAttributeNS ~namespaceURI:DomMisc.helm_ns ~localName:xref_ds
- in
- List.hd (HExtlib.split ~sep:' ' xref_attr#to_string)
- in
- let id = get_id node in
+ method private string_of_cic_sequent cic_sequent =
let script = MatitaScript.current () in
- let metasenv = script#proofMetasenv in
- let context = script#proofContext in
- let metasenv, context, conclusion =
- if script#onGoingProof () then
- script#proofMetasenv, script#proofContext, script#proofConclusion
- else
- [], [],
+ let metasenv =
+ if script#onGoingProof () then script#proofMetasenv else [] in
+ let _, (acic_sequent, _, _, ids_to_inner_sorts, _) =
+ Cic2acic.asequent_of_sequent metasenv cic_sequent in
+ let _, _, _, annterm = acic_sequent in
+ let ast, ids_to_uris =
+ TermAcicContent.ast_of_acic ids_to_inner_sorts annterm in
+ let pped_ast = TermContentPres.pp_ast ast in
+ let markup = CicNotationPres.render ids_to_uris pped_ast in
+ BoxPp.render_to_string text_width markup
+
+ method private pattern_of term context unsh_sequent =
+ let context_len = List.length context in
+ let _, unsh_context, conclusion = unsh_sequent in
+ try
+ (match
+ List.nth unsh_context (List.length unsh_context - context_len - 1)
+ with
+ | None -> assert false (* can't select a restricted hypothesis *)
+ | Some (name, Cic.Decl ty) ->
+ ProofEngineHelpers.pattern_of ~term:ty [term]
+ | Some (name, Cic.Def (bo, _)) ->
+ ProofEngineHelpers.pattern_of ~term:bo [term])
+ with Failure _ | Invalid_argument _ ->
+ ProofEngineHelpers.pattern_of ~term:conclusion [term]
+
+ method private get_cic_info id =
+ match self#cic_info with
+ | Some ((Some unsh_sequent, _, _, _, _, _) as info) -> info, unsh_sequent
+ | Some ((None, _, _, _, _, _) as info) ->
let t = self#find_obj_conclusion id in
- MatitaLog.debug (CicPp.ppterm t);
- t
- in
-(* TODO: code for patterns
- let conclusion = (MatitaScript.instance ())#proofConclusion in
- let conclusion_pattern =
- ProofEngineHelpers.pattern_of ~term:conclusion cic_terms
- in
-*)
- let string_of_cic_sequent cic_sequent =
- let acic_sequent, _, _, ids_to_inner_sorts, _ =
- Cic2acic.asequent_of_sequent metasenv cic_sequent
- in
- let _, _, _, annterm = acic_sequent in
- let ast, ids_to_uris =
- CicNotationRew.ast_of_acic ids_to_inner_sorts annterm
- in
- let pped_ast = CicNotationRew.pp_ast ast in
- let markup = CicNotationPres.render ids_to_uris pped_ast in
- BoxPp.render_to_string text_width markup
- in
- let cic_info =
- match self#cic_info with Some info -> info | None -> assert false
- in
- let cic_sequent =
- match self#get_term_by_id context cic_info id with
- | `Term t ->
- let context' =
- match
- ProofEngineHelpers.locate_in_conjecture t
- (~-1, context, conclusion)
- with
- [context,_] -> context
- | _ -> assert false (* since it uses physical equality *)
- in
- ~-1, context', t
- | `Hyp context -> ~-1, context, Cic.Rel 1
- in
- string_of_cic_sequent cic_sequent
-
- method string_of_selections =
- List.map self#string_of_node (List.rev self#get_selections)
+ info, (~-1, [], t) (* dummy sequent for obj *)
+ | None -> assert false
- method string_of_selection =
+ method private sequent_of_id ~(paste_kind:paste_kind) id =
+ let cic_info, unsh_sequent = self#get_cic_info id in
+ let cic_sequent =
+ match self#get_term_by_id cic_info id with
+ | SelTerm (t, _father_hyp) ->
+ let occurrences =
+ ProofEngineHelpers.locate_in_conjecture t unsh_sequent in
+ (match occurrences with
+ | [ context, _t ] ->
+ (match paste_kind with
+ | `Term -> ~-1, context, t
+ | `Pattern -> ~-1, [], self#pattern_of t context unsh_sequent)
+ | _ ->
+ HLog.error (sprintf "found %d occurrences while 1 was expected"
+ (List.length occurrences));
+ assert false) (* since it uses physical equality *)
+ | SelHyp (_name, context) -> ~-1, context, Cic.Rel 1 in
+ cic_sequent
+
+ method private string_of_selection ~(paste_kind:paste_kind) =
match self#get_selections with
| [] -> None
- | node :: _ -> Some (self#string_of_node node)
+ | node :: _ -> Some (self#string_of_node ~paste_kind node)
+
+ method has_selection = self#get_selections <> []
+
+ (** @return an associative list format -> string with all possible selection
+ * formats. Rationale: in order to convert the selection to TERM or PATTERN
+ * format we need the sequent, the metasenv, ... keeping all of them in a
+ * closure would be more expensive than keeping their already converted
+ * forms *)
+ method strings_of_selection =
+ try
+ let misc = self#coerce#misc in
+ List.iter
+ (fun target -> misc#add_selection_target ~target Gdk.Atom.clipboard)
+ [ "TERM"; "PATTERN"; "STRING" ];
+ ignore (misc#grab_selection Gdk.Atom.clipboard);
+ List.map
+ (fun paste_kind ->
+ paste_kind, HExtlib.unopt (self#string_of_selection ~paste_kind))
+ [ `Term; `Pattern ]
+ with Failure _ -> failwith "no selection"
end
method load_sequent metasenv metano =
let sequent = CicUtil.lookup_meta metano metasenv in
- let (mathml, (_, (ids_to_terms, ids_to_father_ids, ids_to_hypotheses,_ ))) =
+ let (mathml, unsh_sequent,
+ (_, (ids_to_terms, ids_to_father_ids, ids_to_hypotheses,_ )))
+ =
ApplyTransformation.mml_of_cic_sequent metasenv sequent
in
self#set_cic_info
- (Some (ids_to_terms, ids_to_hypotheses, ids_to_father_ids,
+ (Some (Some unsh_sequent,
+ ids_to_terms, ids_to_hypotheses, ids_to_father_ids,
Hashtbl.create 1, None));
let name = "sequent_viewer.xml" in
- MatitaLog.debug ("load_sequent: dumping MathML to ./" ^ name);
- ignore (DomMisc.domImpl#saveDocumentToFile ~name ~doc:mathml ());
+ HLog.debug ("load_sequent: dumping MathML to ./" ^ name);
+ ignore (domImpl#saveDocumentToFile ~name ~doc:mathml ());
self#load_root ~root:mathml#get_documentElement
method load_object obj =
ApplyTransformation.mml_of_cic_object obj
in
self#set_cic_info
- (Some (ids_to_terms, ids_to_hypotheses, ids_to_father_ids, ids_to_inner_types, Some annobj));
+ (Some (None, ids_to_terms, ids_to_hypotheses, ids_to_father_ids, ids_to_inner_types, Some annobj));
(match current_mathml with
| Some current_mathml when use_diff ->
self#freeze;
self#thaw
| _ ->
let name = "cic_browser.xml" in
- MatitaLog.debug ("cic_browser: dumping MathML to ./" ^ name);
- ignore (DomMisc.domImpl#saveDocumentToFile ~name ~doc:mathml ());
+ HLog.debug ("cic_browser: dumping MathML to ./" ^ name);
+ ignore (domImpl#saveDocumentToFile ~name ~doc:mathml ());
self#load_root ~root:mathml#get_documentElement;
current_mathml <- Some mathml);
end
notebook#append_page logo_with_qed
method reset =
+ cicMathView#remove_selections;
(match scrolledWin with
| Some w ->
(* removing page from the notebook will destroy all contained widget,
goal2page <- [];
goal2win <- [];
_metasenv <- [];
- self#script#setGoal ~-1;
+ self#script#setGoal None
method load_sequents { proof = (_,metasenv,_,_) as proof; stack = stack } =
- let sequents_no = List.length metasenv in
_metasenv <- metasenv;
pages <- 0;
let win goal_switch =
let markup =
match depth, pos with
| 0, _ -> `Current (render_switch sw)
- | 1, pos when Stack.head_tag stack = Stack.BranchTag ->
+ | 1, pos when Stack.head_tag stack = `BranchTag ->
`Shift (pos, render_switch sw)
| _ -> render_switch sw
in
let goal_switch =
try List.assoc page page2goal with Not_found -> assert false
in
- self#script#setGoal (goal_of_switch goal_switch);
+ self#script#setGoal (Some (goal_of_switch goal_switch));
self#render_page ~page ~goal_switch))
method private render_page ~page ~goal_switch =
(match goal_switch with
| Stack.Open goal -> cicMathView#load_sequent _metasenv goal
| Stack.Closed goal ->
- let doc = Lazy.force MatitaMisc.closed_goal_mathml in
+ let doc = Lazy.force closed_goal_mathml in
cicMathView#load_root ~root:doc#get_documentElement);
(try
cicMathView#set_selection None;
let current_proof_uri = BuildTimeConf.current_proof_uri
type term_source =
- [ `Ast of DisambiguateTypes.term
+ [ `Ast of CicNotationPt.term
| `Cic of Cic.term * Cic.metasenv
| `String of string
]
class cicBrowser_impl ~(history:MatitaTypes.mathViewer_entry MatitaMisc.history)
()
=
- let term_RE = Pcre.regexp "^term:(.*)" in
let whelp_RE = Pcre.regexp "^\\s*whelp" in
let uri_RE =
Pcre.regexp
in
let dir_RE = Pcre.regexp "^cic:((/([^/]+/)*[^/]+(/)?)|/|)$" in
let whelp_query_RE = Pcre.regexp "^\\s*whelp\\s+([^\\s]+)\\s+(.*)$" in
- let trailing_slash_RE = Pcre.regexp "/$" in
- let has_xpointer_RE = Pcre.regexp "#xpointer\\(\\d+/\\d+(/\\d+)?\\)$" in
let is_whelp txt = Pcre.pmatch ~rex:whelp_RE txt in
let is_uri txt = Pcre.pmatch ~rex:uri_RE txt in
let is_dir txt = Pcre.pmatch ~rex:dir_RE txt in
f ()
with exn ->
if not (Helm_registry.get_bool "matita.debug") then
- fail (MatitaExcPp.to_string exn)
+ fail (snd (MatitaExcPp.to_string exn))
else raise exn
in
let handle_error' f = (fun () -> handle_error (fun () -> f ())) in
method private blank () =
self#_showMath;
- mathView#load_root
- (Lazy.force MatitaMisc.empty_mathml)#get_documentElement
+ mathView#load_root (Lazy.force empty_mathml)#get_documentElement
method private _loadCheck term =
failwith "not implemented _loadCheck";
- self#_showMath
+(* self#_showMath *)
method private egg () =
win#mathOrListNotebook#goto_page 2;
method private home () =
self#_showMath;
- match self#script#status.proof_status with
+ match self#script#grafite_status.proof_status with
| Proof (uri, metasenv, bo, ty) ->
let name = UriManager.name_of_uri (HExtlib.unopt uri) in
let obj = Cic.CurrentProof (name, metasenv, bo, ty, [], []) in
self#_loadList l
method private setEntry entry =
- win#browserUri#entry#set_text (string_of_entry entry);
+ win#browserUri#entry#set_text (MatitaTypes.string_of_entry entry);
current_entry <- entry
method private _loadObj obj =
| txt when is_uri txt -> `Uri (UriManager.uri_of_string (fix_uri txt))
| txt when is_dir txt -> `Dir (MatitaMisc.normalize_dir txt)
| txt ->
- (try
- entry_of_string txt
+ (try
+ MatitaTypes.entry_of_string txt
with Invalid_argument _ ->
- command_error (sprintf "unsupported uri: %s" txt))
+ raise
+ (GrafiteTypes.Command_error(sprintf "unsupported uri: %s" txt)))
in
self#_load entry;
self#_historyAdd entry
end
let refresh_all_browsers () =
- List.iter (fun b -> b#refresh ~force:false ()) !cicBrowsers
+ List.iter (fun b -> b#refresh ~force:false ()) !cicBrowsers
let update_font_sizes () =
List.iter (fun b -> b#updateFontSize) !cicBrowsers;
((cicMathView_instance ()) :> MatitaGuiTypes.clickableMathView)
:: (List.map (fun b -> b#mathView) !cicBrowsers)
-let get_selections () =
- if (MatitaScript.current ())#onGoingProof () then
- let rec aux =
- function
- | [] -> None
- | mv :: tl ->
- (match mv#string_of_selections with
- | [] -> aux tl
- | sels -> Some sels)
- in
- aux (get_math_views ())
- else
- None
-
-let reset_selections () =
- List.iter (fun mv -> mv#remove_selections) (get_math_views ())
+let find_selection_owner () =
+ let rec aux =
+ function
+ | [] -> raise Not_found
+ | mv :: tl ->
+ (match mv#get_selections with
+ | [] -> aux tl
+ | sel :: _ -> mv)
+ in
+ aux (get_math_views ())
+
+let has_selection () =
+ try ignore (find_selection_owner ()); true
+ with Not_found -> false
+
+let math_view_clipboard = ref None (* associative list target -> string *)
+let has_clipboard () = !math_view_clipboard <> None
+let empty_clipboard () = math_view_clipboard := None
+
+let copy_selection () =
+ try
+ math_view_clipboard :=
+ Some ((find_selection_owner ())#strings_of_selection)
+ with Not_found -> failwith "no selection"
+
+let paste_clipboard paste_kind =
+ match !math_view_clipboard with
+ | None -> failwith "empty clipboard"
+ | Some cb ->
+ (try List.assoc paste_kind cb with Not_found -> assert false)
projects / helm.git / blobdiff