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Diffstat (limited to 'inputline.h')
| -rw-r--r-- | inputline.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/inputline.h b/inputline.h new file mode 100644 index 0000000..82c3e5a --- /dev/null +++ b/inputline.h @@ -0,0 +1,147 @@ +// Copyright (C) 2003 Mooffie <mooffie@typo.co.il> +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. + +#ifndef BDE_INPUTLINE_H +#define BDE_INPUTLINE_H + +#include <vector> + +#include "editbox.h" + + +class InputLine : public EditBox { + +public: + + typedef std::vector<unistring> StringArray; + + // What kind of filenames, if any, to complete? + enum CompleteType { + cmpltOff, // turn off filename completion. + cmpltAll, + cmpltDirectories // complete only directory names. + // this is useful for, e.g., a "Change Dir:" + // input line. + }; + +private: + + unistring vis_label; + direction_t label_dir; + int label_width; + + // Filename completion variables: + + CompleteType complete_type; + StringArray files_list; + u8string files_directory; // the directory we're listing + + int event_num; + int last_tab_event_num; + + int insertion_pos; + int prefix_len; + int slice_begin; + int slice_end; + int curr_choice; + + /* + A little example can help in explaining what each completion + variable means. + + Let's suppose our input-line looks like: + + ~/documents/no_ -cp862 + ^-----------cursor + + We press TAB and a "TAB session" starts: + + 0. "no" is the partial filename component and "~/documents/" is the + directory name component. + + 1. files_list is populated with all filenames in "~/documents": + + 0. archive.txt + 1. notes.txt + 2. notes2.txt + 3. november.txt + 4. questions.txt + + 2. only entries 1 to 3 are relevant in our TAB session (because + they start in "no"), so slice_begin is set to 1 and slice_end + to 3. + + 3. insertion_pos is set to the cursor position. + + 4. prefix_len is set to the length of the partial filename + component: 2. (that is, strlen("no")). + + 5. While moving forward and backward in files_list (as a result + of pressing TAB and M-TAB), curr_choice is updated to point + to the current entry. + */ + + // History variables: + + StringArray *history; + int history_idx; + +protected: + + // Filename completion + + void init_completion(); + void get_directory_files(u8string directory, const char *prefix = NULL); + void complete(bool forward); + + // History + + void init_history(int history_set); + void update_history(); + + //// + + void trim(); + +protected: + virtual void do_syntax_highlight(const unistring &str, + AttributeArray &attributes, int para_num); + +public: + + HAS_ACTIONS_MAP(InputLine, EditBox); + HAS_BINDINGS_MAP(InputLine, EditBox); + + InputLine(const char *aLabel, const unistring &default_text, + int history_set = 0, CompleteType complete = cmpltOff); + void set_label(const char *aLabel); + void set_text(const unistring &s); + unistring get_text() { return curr_para()->str; } + + INTERACTIVE void end_modal(); + INTERACTIVE void next_completion(); + INTERACTIVE void previous_completion(); + INTERACTIVE void next_history(); + INTERACTIVE void previous_history(); + + virtual void redraw_paragraph(Paragraph &p, + int window_start_line, bool only_cursor, int); + + virtual bool handle_event(const Event &evt); +}; + +#endif + |