Quelle wg_Find.ml Sprache: SML

(************************************************************************)
(*         *      The Rocq Prover / The Rocq Development Team           *)
(*  v      *         Copyright INRIA, CNRS and contributors             *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(*   \VV/  **************************************************************)
(*    //   *    This file is distributed under the terms of the         *)
(*         *     GNU Lesser General Public License Version 2.1          *)
(*         *     (see LICENSE file for the text of the license)         *)
(************************************************************************)

let b2c = Ideutils.byte_offset_to_char_offset

class finder name (view : GText.view) =

  let widget = Wg_Detachable.detachable
    ~title:(Printf.sprintf "Find & Replace (%s)" name) () in
  let replace_box = GPack.grid ~col_homogeneous:false ~row_homogeneous:false
    ~row_spacings:2 ~col_spacings:2 ~packing:widget#add () in
  let () = replace_box#set_margin 2 in
  let hb = GPack.hbox ~packing:(replace_box#attach ~left:1 ~top:0) () 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 find_label = GMisc.label ~text:"Find:"
    ~packing:(replace_box#attach ~left:0 ~top:1) () in
  let replace_label = GMisc.label ~text:"Replace with:"
    ~packing:(replace_box#attach ~left:0 ~top:2) () in
  let () = List.iter (fun label ->
      label#set_halign `START;
      label#set_margin_left 2;
      label#set_margin_right 2;
    ) [find_label; replace_label] in
  let find_entry = GEdit.entry ~editable:true
    ~packing:(replace_box#attach ~left:1 ~top:1) () in
  let replace_entry = GEdit.entry ~editable:true
    ~packing:(replace_box#attach ~left:1 ~top:2) () in
  let next_button = GButton.button ~label:"_Next" ~use_mnemonic:true
    ~packing:(replace_box#attach ~left:2 ~top:1) () in
  let previous_button = GButton.button ~label:"_Previous" ~use_mnemonic:true
    ~packing:(replace_box#attach ~left:3 ~top:1) () in
  let replace_button = GButton.button ~label:"_Replace" ~use_mnemonic:true
    ~packing:(replace_box#attach ~left:2 ~top:2) () in
  let replace_all_button =
    GButton.button ~label:"Replace _All" ~use_mnemonic:true
      ~packing:(replace_box#attach ~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 begin
        let txt = self#get_selected_word () in
        let () = view#buffer#begin_user_action () in
        let _ = view#buffer#delete_selection () in
        let _ = view#buffer#insert_interactive (self#replacement txt) in
        let () = view#buffer#end_user_action () in
        self#find_forward ()
      end

    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
      let offs = (String.length text - 1) in
      if offs < 0 then None
      else try
        let i = Str.search_backward regexp text offs in
        let j = Str.match_end () in
        Some(view#buffer#start_iter#forward_chars (b2c text i),
             view#buffer#start_iter#forward_chars (b2c text 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 (b2c text i), starti#forward_chars (b2c text j))
      with Not_found -> None

    method replace_all () =
      let rec replace_at (iter : GText.iter) ct tot =
        let found = self#forward_search iter in
        match found with
        | None ->
           let tot_str = if Int.equal ct tot then "" else " of " ^ string_of_int tot in
           let occ_str = CString.plural tot "occurrence" in
           let _ = Ideutils.flash_info ("Replaced " ^ string_of_int ct ^ tot_str ^ " " ^ occ_str) in
           ()
        | 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 mod_save = view#buffer#modified in
          let _ = view#buffer#set_modified false 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 edited = view#buffer#modified in
          let _ = view#buffer#set_modified (edited || mod_save) 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
          let next_ct = if edited then ct + 1 else ct in
          replace_at next next_ct (tot + 1)
      in
      if self#search_text <> "" then begin
        let () = view#buffer#begin_user_action () in
        let () = replace_at view#buffer#start_iter 0 0 in
        view#buffer#end_user_action ()
      end

    method private set_not_found () =
      find_entry#set_secondary_icon_stock `DELETE;
      find_entry#set_secondary_icon_tooltip_text "String not found";

    method private set_found () =
      find_entry#set_secondary_icon_stock `FIND;
      find_entry#set_secondary_icon_tooltip_text "String found";

    method private set_normal () =
      find_entry#set_secondary_icon_stock (`STOCK "");
      find_entry#set_secondary_icon_tooltip_text "";

    method private find_from backward ?(wrapped=false) (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 ~wrapped:true view#buffer#start_iter
        else if backward && not (starti#equal view#buffer#end_iter) then
          self#find_from backward ~wrapped:true view#buffer#end_iter
        else
          let _ = Ideutils.flash_info "String not found" in
          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;
      self#set_normal ();
      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 dispatch_key_cb esc_cb ret_cb shift_ret_cb next_focus ev =
        let ev_key = GdkEvent.Key.keyval ev in
        let ev_modifiers = GdkEvent.Key.state ev in
        if ev_key = GdkKeysyms._Return then
          (if List.mem `SHIFT ev_modifiers then
            shift_ret_cb ()
          else ret_cb (); true)
        else if ev_key = GdkKeysyms._Escape then (esc_cb (); true)
        else if ev_key = GdkKeysyms._Tab then (next_focus (); true)
        else false
      in
      let find_focus () = replace_entry#misc#grab_focus () in
      let replace_focus () = find_entry#misc#grab_focus () in
      let find_cb = dispatch_key_cb self#hide self#find_forward self#find_backward find_focus in
      let replace_cb = dispatch_key_cb self#hide self#replace self#replace replace_focus in
      let _ = find_entry#event#connect#key_press ~callback:find_cb in
      let _ = replace_entry#event#connect#key_press ~callback: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 ~callback:view_cb in
      ()

  end

quality100%

¤ Dauer der Verarbeitung: 0.6 Sekunden ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.