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121 lines
4.1 KiB
C
121 lines
4.1 KiB
C
//---
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// JustUI.jfileselect: Basic file selector
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//---
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#ifndef _J_JFILESELECT
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#define _J_JFILESELECT
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#include <justui/defs.h>
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#include <justui/jwidget.h>
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#include <justui/jinput.h>
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#include <gint/display.h>
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#include <dirent.h>
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/* jfileselect: Basic file selector
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This widget is used to browse the filesystem and select a file. Visually, it
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only consists of a scrolling list of names showing a section of a folder's
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entries.
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Events:
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* JFILESELECT_LOADED when a folder is loaded into the view
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* JFILESELECT_VALIDATED when a file has been selected
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* JFILESELECT_CANCELED when if the user exits from the top-level folder */
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typedef struct {
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jwidget widget;
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/* Folder currently being browsed */
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char *path;
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/* List of entries */
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void *entries;
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/* Number of entries in the current folder */
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int entry_count;
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/* Full path to file last selected with EXE */
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char *selected_file;
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/* "Save As" input field */
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jinput *saveas_input;
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/* Whether the "Save As" option is shown */
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bool saveas;
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/* Whether we are currently using the input field */
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bool input_mode;
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/* Scrollbar with (0 to disable) */
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int8_t scrollbar_width;
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/* File filter; NULL accepts everything */
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bool (*filter_function)(struct dirent const *entry);
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/* Current cursor position (0 .. folder_entries-1) */
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int16_t cursor;
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/* Current scroll position */
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int16_t scroll;
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/* Number of visible lines */
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int8_t visible_lines;
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/* Additional pixels of spacing per line (base is font->height) */
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int8_t line_spacing;
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/* Whether to show the file size on the right */
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bool show_file_size;
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/* Rendering font */
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font_t const *font;
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} jfileselect;
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/* Event IDs */
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extern uint16_t JFILESELECT_LOADED;
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extern uint16_t JFILESELECT_VALIDATED;
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extern uint16_t JFILESELECT_CANCELED;
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/* jfileselect_create(): Create a file selection interface
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There is no initial folder. The widget will not handle any events nor emit
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any events in this state; a path must first be set before use. */
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jfileselect *jfileselect_create(void *parent);
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/* jfileselect_set_saveas(): Select whether a "Save as" option is presented
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If true, the browser will show a "<Create a new file here>" entry in every
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directory. The result of jfileselect_selected_file(), in this case, might be
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a file that does not yet exist. */
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void jfileselect_set_saveas(jfileselect *fs, bool save_as);
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/* jfileselect_browse(): Browse a folder
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This function loads the specified folder and allows the user to select a
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file. (Remember to give the widget focus.) A JFILESELECT_LOADED event is
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emitted immediately, and further events are emitted based on user inputs.
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This function resets the selected file to NULL.
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Returns true on success, false if the path does not exist or cannot be
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browsed (in that case, check errno). */
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bool jfileselect_browse(jfileselect *fs, char const *path);
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/* jfileselect_selected_file(): Get the path to the selected file
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The selected file is NULL until jfileselect_browse() is called and the user
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selects a file in the interface. The returned pointer is owned by the
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widget. */
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char const *jfileselect_selected_file(jfileselect *fs);
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/* jfileselect_current_folder(): Get the path to the current folder */
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char const *jfileselect_current_folder(jfileselect *fs);
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/* jfileselect_set_filter(): Set a filter function
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The function is called on each directory entry read when scanning a folder.
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It should return true to show the entry, false to ignore it. By default,
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jfileselect_default_filter is used. Note filters in general should really
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accept folders. */
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void jfileselect_set_filter(jfileselect *fs,
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bool (*filter)(struct dirent const *entry));
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/* Default filter. Rejects "@MainMem", "SAVE-F", "." and "..". */
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bool jfileselect_default_filter(struct dirent const *entry);
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/* Trivial properties */
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void jfileselect_set_font(jfileselect *fs, font_t const *font);
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void jfileselect_set_line_spacing(jfileselect *fs, int line_spacing);
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void jfileselect_set_scrollbar_width(jfileselect *fs, int scrollbar_width);
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void jfileselect_set_show_file_size(jfileselect *fs, bool show_file_size);
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#endif /* _J_JFILESELECT */
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