New functions for goals fetching.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12877 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 94 insertions, 0 deletions

diff --git a/ide/proof.ml b/ide/proof.ml
new file mode 100644
index 0000000000..b91233e293
--- /dev/null
+++ b/ide/proof.ml
@@ -0,0 +1,94 @@
+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
+(*   \VV/  **************************************************************)
+(*    //   *      This file is distributed under the terms of the       *)
+(*         *       GNU Lesser General Public License Version 2.1        *)
+(************************************************************************)
+
+
+(* $Id$ *)
+
+(* tag is the tag to be hooked, item is the item covered by this tag, make_menu
+ *  * is the template for building menu if needed, sel_cb is the callback if
+ *  there
+ *   * is a selection o said menu, hover_cb is the callback when there is only
+ *    * hovering *)
+let hook_tag_cb tag menu_content sel_cb hover_cb =
+  ignore (tag#connect#event ~callback:
+            (fun ~origin evt it ->
+               let iter = new GText.iter it in
+               let start = iter#backward_to_tag_toggle (Some tag) in
+               let stop = iter#forward_to_tag_toggle (Some tag) in
+               match GdkEvent.get_type evt with
+                 | `BUTTON_PRESS ->
+                     let ev = GdkEvent.Button.cast evt in
+                     if (GdkEvent.Button.button ev) <> 3 then false else begin
+                       let ctxt_menu = GMenu.menu () in
+                       let factory = new GMenu.factory ctxt_menu in
+                       List.iter
+                         (fun (text,cmd) -> ignore (factory#add_item text ~callback:(sel_cb cmd)))
+                         menu_content;
+                       ctxt_menu#popup ~button:3 ~time:(GdkEvent.Button.time ev);
+                       true
+                     end
+                 | `MOTION_NOTIFY ->
+                     hover_cb start stop; false
+                 | _ -> false))
+
+let mode_tactic sel_cb (proof:GText.view) = function
+  | [] -> assert false
+  | (hyps,cur_goal,cur_goal_menu)::rem_goals ->
+      let on_hover sel_start sel_stop =
+        proof#buffer#remove_tag_by_name
+          "highlight"
+          ~start:proof#buffer#start_iter
+          ~stop:sel_start;
+        proof#buffer#remove_tag_by_name
+          "highlight"
+          ~start:sel_stop
+          ~stop:proof#buffer#end_iter
+      in
+      let goals_cnt = List.length rem_goals + 1 in
+      let head_str = Printf.sprintf "%d subgoal%s\n" goals_cnt (if 1 < goals_cnt then "" else "s") in
+      let insert_hyp (h,menu) =
+        let tag = proof#buffer#create_tag [] in
+        hook_tag_cb tag menu sel_cb on_hover;
+        proof#buffer#insert ~tags:[tag] (h^"\n")
+      in
+      let insert_goal g menu index total =
+        let tags = if menu <> [] then
+          let tag = proof#buffer#create_tag [] in
+          hook_tag_cb tag menu sel_cb on_hover;
+          [tag]
+          else []
+        in
+        proof#buffer#insert (Printf.sprintf
+                               "\n______________________________________(%d/%d)\n" index total);
+        proof#buffer#insert ~tags (g^"\n")
+      in
+      proof#buffer#insert head_str;
+      List.iter insert_hyp hyps;
+      insert_goal cur_goal cur_goal_menu 1 goals_cnt;
+      Util.list_fold_left_i (fun i _ (_,g,_) -> insert_goal g [] i goals_cnt) 2 () rem_goals;
+      ignore (proof#scroll_to_iter
+                ((proof#buffer#get_iter_at_mark `INSERT)#backward_lines (3*goals_cnt - 2)))
+
+let mode_cesar (proof:GText.view) = function
+  | [] -> assert false
+  | (hyps,(cur_goal,cur_goal_menu))::_ ->
+      proof#buffer#insert "    *** Declarative Mode ***\n";
+      List.iter
+        (fun (hyp,_) -> proof#buffer#insert (hyp^"\n"))
+        hyps;
+      proof#buffer#insert "______________________________________\n";
+      proof#buffer#insert ("thesis := \n "^cur_goal^"\n");
+      ignore (proof#scroll_to_iter (proof#buffer#get_iter_at_mark `INSERT))
+
+let display mode view goals =
+  view#buffer#set_text "";
+  match goals with
+    | Coq.Message msg ->
+        view#buffer#insert msg
+    | Coq.Goals g ->
+        mode view g