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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
type mode = [ `FIND | `REPLACE ]
class finder name (view : GText.view) =
let widget = Wg_Detachable.detachable
~title:(Printf.sprintf "Find & Replace (%s)" name) () in
let replace_box = GPack.table ~columns:4 ~rows:2 ~homogeneous:false
~packing:widget#add () in
let hb = GPack.hbox ~packing:(replace_box#attach
~left:1 ~top:0 ~expand:`X ~fill:`X) () in
let use_regex =
GButton.check_button ~label:"Regular expression"
~packing:(hb#pack ~expand:false ~fill:true ~padding:3) () in
let use_nocase =
GButton.check_button ~label:"Case insensitive"
~packing:(hb#pack ~expand:false ~fill:true ~padding:3) () in
let _ = GMisc.label ~text:"Find:" ~xalign:1.0
~packing:(replace_box#attach
~xpadding:3 ~ypadding:3 ~left:0 ~top:1 ~fill:`X) () in
let _ = GMisc.label ~text:"Replace:" ~xalign:1.0
~packing:(replace_box#attach
~xpadding:3 ~ypadding:3 ~left:0 ~top:2 ~fill:`X) () in
let find_entry = GEdit.entry ~editable:true
~packing:(replace_box#attach
~xpadding:3 ~ypadding:3 ~left:1 ~top:1 ~expand:`X ~fill:`X) () in
let replace_entry = GEdit.entry ~editable:true
~packing:(replace_box#attach
~xpadding:3 ~ypadding:3 ~left:1 ~top:2 ~expand:`X ~fill:`X) () in
let next_button = GButton.button ~label:"_Next" ~use_mnemonic:true
~packing:(replace_box#attach ~xpadding:3 ~ypadding:3 ~left:2 ~top:1) () in
let previous_button = GButton.button ~label:"_Previous" ~use_mnemonic:true
~packing:(replace_box#attach ~xpadding:3 ~ypadding:3 ~left:3 ~top:1) () in
let replace_button = GButton.button ~label:"_Replace" ~use_mnemonic:true
~packing:(replace_box#attach ~xpadding:3 ~ypadding:3 ~left:2 ~top:2) () in
let replace_all_button =
GButton.button ~label:"Replace _All" ~use_mnemonic:true
~packing:(replace_box#attach ~xpadding:3 ~ypadding:3 ~left:3 ~top:2) () in
object (self)
val mutable last_found = None
method coerce = widget#coerce
method private get_selected_word () =
let start = view#buffer#get_iter `INSERT in
let stop = view#buffer#get_iter `SEL_BOUND in
view#buffer#get_text ~start ~stop ()
method private may_replace () =
(self#search_text <> "") &&
(Str.string_match self#regex (self#get_selected_word ()) 0)
method replace () =
if self#may_replace () then
let txt = self#get_selected_word () in
let _ = view#buffer#delete_selection () in
let _ = view#buffer#insert_interactive (self#replacement txt) in
self#find_forward ()
else self#find_forward ()
method private regex =
let rex = self#search_text in
if use_regex#active then
if use_nocase#active then Str.regexp_case_fold rex
else Str.regexp rex
else
if use_nocase#active then Str.regexp_string_case_fold rex
else Str.regexp_string rex
method private replacement txt =
if use_regex#active then Str.replace_matched replace_entry#text txt
else replace_entry#text
method private backward_search starti =
let text = view#buffer#start_iter#get_text ~stop:starti in
let regexp = self#regex in
try
let i = Str.search_backward regexp text (String.length text - 1) in
let j = Str.match_end () in
Some(view#buffer#start_iter#forward_chars i,
view#buffer#start_iter#forward_chars j)
with Not_found -> None
method private forward_search starti =
let text = starti#get_text ~stop:view#buffer#end_iter in
let regexp = self#regex in
try
let i = Str.search_forward regexp text 0 in
let j = Str.match_end () in
Some(starti#forward_chars i, starti#forward_chars j)
with Not_found -> None
method replace_all () =
let rec replace_at (iter : GText.iter) =
let found = self#forward_search iter in
match found with
| None -> ()
| Some (start, stop) ->
let text = iter#get_text ~stop:view#buffer#end_iter in
let start_mark = view#buffer#create_mark start in
let stop_mark = view#buffer#create_mark ~left_gravity:false stop in
let _ = view#buffer#delete_interactive ~start ~stop () in
let iter = view#buffer#get_iter_at_mark (`MARK start_mark) in
let _ = view#buffer#insert_interactive ~iter (self#replacement text)in
let next = view#buffer#get_iter_at_mark (`MARK stop_mark) in
let () = view#buffer#delete_mark (`MARK start_mark) in
let () = view#buffer#delete_mark (`MARK stop_mark) in
replace_at next
in
replace_at view#buffer#start_iter
method private set_not_found () =
find_entry#misc#modify_base [`NORMAL, `NAME "#F7E6E6"];
method private set_found () =
find_entry#misc#modify_base [`NORMAL, `NAME "#BAF9CE"]
method private set_normal () =
find_entry#misc#modify_base [`NORMAL, `NAME "white"]
method private find_from backward (starti : GText.iter) =
let found =
if backward then self#backward_search starti
else self#forward_search starti in
match found with
| None ->
if not backward && not (starti#equal view#buffer#start_iter) then
self#find_from backward view#buffer#start_iter
else if backward && not (starti#equal view#buffer#end_iter) then
self#find_from backward view#buffer#end_iter
else
self#set_not_found ()
| Some (start, stop) ->
let _ = view#buffer#select_range start stop in
let scroll = `MARK (view#buffer#create_mark stop) in
let _ = view#scroll_to_mark ~use_align:false scroll in
self#set_found ()
method find_forward () =
let starti = view#buffer#get_iter `SEL_BOUND in
self#find_from false starti
method find_backward () =
let starti = view#buffer#get_iter `INSERT in
self#find_from true starti
method private search_text = find_entry#text
method hide () =
widget#hide;
view#coerce#misc#grab_focus ()
method show () =
widget#show;
find_entry#misc#grab_focus ()
initializer
let _ = self#hide () in
(** Widget button interaction *)
let _ = next_button#connect#clicked ~callback:self#find_forward in
let _ = previous_button#connect#clicked ~callback:self#find_backward in
let _ = replace_button#connect#clicked ~callback:self#replace in
let _ = replace_all_button#connect#clicked ~callback:self#replace_all in
(** Keypress interaction *)
let generic_cb esc_cb ret_cb ev =
let ev_key = GdkEvent.Key.keyval ev in
let (return, _) = GtkData.AccelGroup.parse "Return" in
let (esc, _) = GtkData.AccelGroup.parse "Escape" in
if ev_key = return then (ret_cb (); true)
else if ev_key = esc then (esc_cb (); true)
else false
in
let find_cb = generic_cb self#hide self#find_forward in
let replace_cb = generic_cb self#hide self#replace in
let _ = find_entry#event#connect#key_press find_cb in
let _ = replace_entry#event#connect#key_press replace_cb in
(** TextView interaction *)
let view_cb ev =
if widget#visible then
let ev_key = GdkEvent.Key.keyval ev in
if ev_key = GdkKeysyms._Escape then (widget#hide; true)
else false
else false
in
let _ = view#event#connect#key_press view_cb in
()
end
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