[settings] Use generic jump scrolling abstraction
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
parent
58752cc10d
commit
ad2e82a65b
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@ -15,9 +15,13 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdio.h>
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#include <stdarg.h>
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@ -29,6 +33,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
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#include <ipxe/editbox.h>
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#include <ipxe/keys.h>
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#include <ipxe/ansicol.h>
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#include <ipxe/jumpscroll.h>
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#include <ipxe/settings_ui.h>
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#include <config/branding.h>
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@ -48,7 +53,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
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#define INSTRUCTION_ROW ( LINES - 2U )
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#define INSTRUCTION_PAD " "
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/** Layout of text within a setting widget */
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/** Layout of text within a setting row */
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#define SETTING_ROW_TEXT( cols ) struct { \
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char start[0]; \
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char pad1[1]; \
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@ -64,8 +69,8 @@ FILE_LICENCE ( GPL2_OR_LATER );
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char nul; \
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} __attribute__ (( packed ))
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/** A setting row widget */
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struct setting_row_widget {
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/** A settings user interface row */
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struct settings_ui_row {
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/** Target configuration settings block
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*
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* Valid only for rows that lead to new settings blocks.
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@ -83,8 +88,6 @@ struct setting_row_widget {
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struct setting setting;
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/** Screen row */
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unsigned int row;
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/** Screen column */
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unsigned int col;
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/** Edit box widget used for editing setting */
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struct edit_box editbox;
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/** Editing in progress flag */
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@ -93,28 +96,24 @@ struct setting_row_widget {
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char value[256]; /* enough size for a DHCP string */
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};
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/** A settings widget */
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struct setting_widget {
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/** A settings user interface */
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struct settings_ui {
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/** Settings block */
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struct settings *settings;
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/** Number of rows */
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unsigned int num_rows;
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/** Current row index */
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unsigned int current;
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/** Index of the first visible row, for scrolling. */
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unsigned int first_visible;
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/** Active row */
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struct setting_row_widget row;
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/** Jump scroller */
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struct jump_scroller scroll;
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/** Current row */
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struct settings_ui_row row;
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};
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/**
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* Select a setting row
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* Select a setting
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*
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* @v widget Setting widget
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* @v ui Settings user interface
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* @v index Index of setting row
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* @ret count Number of settings rows
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* @ret count Number of setting rows
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*/
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static unsigned int select_setting_row ( struct setting_widget *widget,
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static unsigned int select_setting_row ( struct settings_ui *ui,
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unsigned int index ) {
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SETTING_ROW_TEXT ( COLS ) *text;
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struct settings *settings;
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@ -123,25 +122,22 @@ static unsigned int select_setting_row ( struct setting_widget *widget,
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unsigned int count = 0;
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/* Initialise structure */
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memset ( &widget->row, 0, sizeof ( widget->row ) );
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widget->current = index;
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widget->row.row = ( SETTINGS_LIST_ROW + index - widget->first_visible );
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widget->row.col = SETTINGS_LIST_COL;
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memset ( &ui->row, 0, sizeof ( ui->row ) );
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ui->row.row = ( SETTINGS_LIST_ROW + index - ui->scroll.first );
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/* Include parent settings block, if applicable */
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if ( widget->settings->parent && ( count++ == index ) ) {
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widget->row.settings = widget->settings->parent;
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snprintf ( widget->row.value, sizeof ( widget->row.value ),
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if ( ui->settings->parent && ( count++ == index ) ) {
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ui->row.settings = ui->settings->parent;
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snprintf ( ui->row.value, sizeof ( ui->row.value ),
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"../" );
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}
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/* Include any child settings blocks, if applicable */
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list_for_each_entry ( settings, &widget->settings->children, siblings ){
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list_for_each_entry ( settings, &ui->settings->children, siblings ) {
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if ( count++ == index ) {
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widget->row.settings = settings;
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snprintf ( widget->row.value,
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sizeof ( widget->row.value ), "%s/",
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settings->name );
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ui->row.settings = settings;
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snprintf ( ui->row.value, sizeof ( ui->row.value ),
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"%s/", settings->name );
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}
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}
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@ -149,7 +145,7 @@ static unsigned int select_setting_row ( struct setting_widget *widget,
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for_each_table_entry ( setting, SETTINGS ) {
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/* Skip inapplicable settings */
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if ( ! setting_applies ( widget->settings, setting ) )
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if ( ! setting_applies ( ui->settings, setting ) )
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continue;
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/* Skip duplicate settings */
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@ -159,18 +155,16 @@ static unsigned int select_setting_row ( struct setting_widget *widget,
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/* Read current setting value and origin */
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if ( count++ == index ) {
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fetchf_setting ( widget->settings, setting,
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&widget->row.origin,
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&widget->row.setting,
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widget->row.value,
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sizeof ( widget->row.value ) );
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fetchf_setting ( ui->settings, setting, &ui->row.origin,
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&ui->row.setting, ui->row.value,
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sizeof ( ui->row.value ) );
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}
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}
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/* Initialise edit box */
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init_editbox ( &widget->row.editbox, widget->row.value,
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sizeof ( widget->row.value ), NULL, widget->row.row,
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( widget->row.col +
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init_editbox ( &ui->row.editbox, ui->row.value,
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sizeof ( ui->row.value ), NULL, ui->row.row,
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( SETTINGS_LIST_COL +
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offsetof ( typeof ( *text ), u.setting.value ) ),
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sizeof ( text->u.setting.value ), 0 );
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@ -198,9 +192,9 @@ static size_t string_copy ( char *dest, const char *src, size_t len ) {
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/**
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* Draw setting row
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*
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* @v widget Setting widget
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* @v ui Settings UI
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*/
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static void draw_setting_row ( struct setting_widget *widget ) {
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static void draw_setting_row ( struct settings_ui *ui ) {
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SETTING_ROW_TEXT ( COLS ) text;
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unsigned int curs_offset;
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char *value;
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@ -210,12 +204,12 @@ static void draw_setting_row ( struct setting_widget *widget ) {
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text.nul = '\0';
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/* Construct row content */
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if ( widget->row.settings ) {
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if ( ui->row.settings ) {
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/* Construct space-padded name */
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curs_offset = ( offsetof ( typeof ( text ), u.settings ) +
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string_copy ( text.u.settings,
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widget->row.value,
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ui->row.value,
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sizeof ( text.u.settings ) ) );
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} else {
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@ -223,11 +217,11 @@ static void draw_setting_row ( struct setting_widget *widget ) {
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/* Construct dot-padded name */
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memset ( text.u.setting.name, '.',
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sizeof ( text.u.setting.name ) );
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string_copy ( text.u.setting.name, widget->row.setting.name,
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string_copy ( text.u.setting.name, ui->row.setting.name,
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sizeof ( text.u.setting.name ) );
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/* Construct space-padded value */
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value = widget->row.value;
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value = ui->row.value;
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if ( ! *value )
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value = "<not specified>";
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curs_offset = ( offsetof ( typeof ( text ), u.setting.value ) +
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@ -236,37 +230,34 @@ static void draw_setting_row ( struct setting_widget *widget ) {
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}
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/* Print row */
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if ( ( widget->row.origin == widget->settings ) ||
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( widget->row.settings != NULL ) ) {
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if ( ( ui->row.origin == ui->settings ) || ( ui->row.settings != NULL ))
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attron ( A_BOLD );
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}
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mvprintw ( widget->row.row, widget->row.col, "%s", text.start );
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mvprintw ( ui->row.row, SETTINGS_LIST_COL, "%s", text.start );
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attroff ( A_BOLD );
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move ( widget->row.row, widget->row.col + curs_offset );
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move ( ui->row.row, ( SETTINGS_LIST_COL + curs_offset ) );
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}
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/**
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* Edit setting widget
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* Edit setting ui
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*
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* @v widget Setting widget
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* @v ui Settings UI
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* @v key Key pressed by user
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* @ret key Key returned to application, or zero
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*/
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static int edit_setting ( struct setting_widget *widget, int key ) {
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assert ( widget->row.setting.name != NULL );
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widget->row.editing = 1;
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return edit_editbox ( &widget->row.editbox, key );
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static int edit_setting ( struct settings_ui *ui, int key ) {
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assert ( ui->row.setting.name != NULL );
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ui->row.editing = 1;
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return edit_editbox ( &ui->row.editbox, key );
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}
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/**
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* Save setting widget value back to configuration settings
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* Save setting ui value back to configuration settings
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*
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* @v widget Setting widget
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* @v ui Settings UI
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*/
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static int save_setting ( struct setting_widget *widget ) {
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assert ( widget->row.setting.name != NULL );
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return storef_setting ( widget->settings, &widget->row.setting,
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widget->row.value );
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static int save_setting ( struct settings_ui *ui ) {
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assert ( ui->row.setting.name != NULL );
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return storef_setting ( ui->settings, &ui->row.setting, ui->row.value );
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}
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/**
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@ -341,13 +332,13 @@ static void alert ( const char *fmt, ... ) {
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/**
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* Draw title row
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*
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* @v widget Setting widget
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* @v ui Settings UI
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*/
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static void draw_title_row ( struct setting_widget *widget ) {
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static void draw_title_row ( struct settings_ui *ui ) {
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const char *name;
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clearmsg ( TITLE_ROW );
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name = settings_name ( widget->settings );
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name = settings_name ( ui->settings );
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attron ( A_BOLD );
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msg ( TITLE_ROW, PRODUCT_SHORT_NAME " configuration settings%s%s",
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( name[0] ? " - " : "" ), name );
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@ -357,88 +348,73 @@ static void draw_title_row ( struct setting_widget *widget ) {
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/**
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* Draw information row
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*
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* @v widget Setting widget
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* @v ui Settings UI
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*/
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static void draw_info_row ( struct setting_widget *widget ) {
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static void draw_info_row ( struct settings_ui *ui ) {
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char buf[32];
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/* Draw nothing unless this row represents a setting */
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clearmsg ( INFO_ROW );
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clearmsg ( INFO_ROW + 1 );
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if ( ! widget->row.setting.name )
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if ( ! ui->row.setting.name )
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return;
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/* Determine a suitable setting name */
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setting_name ( ( widget->row.origin ?
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widget->row.origin : widget->settings ),
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&widget->row.setting, buf, sizeof ( buf ) );
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setting_name ( ( ui->row.origin ?
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ui->row.origin : ui->settings ),
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&ui->row.setting, buf, sizeof ( buf ) );
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/* Draw row */
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attron ( A_BOLD );
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msg ( INFO_ROW, "%s - %s", buf, widget->row.setting.description );
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msg ( INFO_ROW, "%s - %s", buf, ui->row.setting.description );
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attroff ( A_BOLD );
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color_set ( CPAIR_URL, NULL );
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msg ( ( INFO_ROW + 1 ), PRODUCT_SETTING_URI, widget->row.setting.name );
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msg ( ( INFO_ROW + 1 ), PRODUCT_SETTING_URI, ui->row.setting.name );
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color_set ( CPAIR_NORMAL, NULL );
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}
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/**
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* Draw instruction row
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*
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* @v widget Setting widget
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* @v ui Settings UI
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*/
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static void draw_instruction_row ( struct setting_widget *widget ) {
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static void draw_instruction_row ( struct settings_ui *ui ) {
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clearmsg ( INSTRUCTION_ROW );
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if ( widget->row.editing ) {
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if ( ui->row.editing ) {
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msg ( INSTRUCTION_ROW,
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"Enter - accept changes" INSTRUCTION_PAD
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"Ctrl-C - discard changes" );
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} else {
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msg ( INSTRUCTION_ROW,
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"%sCtrl-X - exit configuration utility",
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( ( widget->row.origin == widget->settings ) ?
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( ( ui->row.origin == ui->settings ) ?
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"Ctrl-D - delete setting" INSTRUCTION_PAD : "" ) );
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}
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}
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/**
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* Reveal setting row
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* Draw the current block of setting rows
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*
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* @v widget Setting widget
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* @v index Index of setting row
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* @v ui Settings UI
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*/
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static void reveal_setting_row ( struct setting_widget *widget,
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unsigned int index ) {
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static void draw_setting_rows ( struct settings_ui *ui ) {
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unsigned int i;
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/* Simply return if setting N is already on-screen. */
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if ( index - widget->first_visible < SETTINGS_LIST_ROWS )
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return;
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/* Jump scroll to make the specified setting row visible. */
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while ( widget->first_visible < index )
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widget->first_visible += SETTINGS_LIST_ROWS;
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while ( widget->first_visible > index )
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widget->first_visible -= SETTINGS_LIST_ROWS;
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/* Draw ellipses before and/or after the settings list to
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* represent any invisible settings.
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*/
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mvaddstr ( SETTINGS_LIST_ROW - 1,
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SETTINGS_LIST_COL + 1,
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widget->first_visible > 0 ? "..." : " " );
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mvaddstr ( SETTINGS_LIST_ROW + SETTINGS_LIST_ROWS,
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SETTINGS_LIST_COL + 1,
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( ( widget->first_visible + SETTINGS_LIST_ROWS )
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< widget->num_rows ? "..." : " " ) );
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/* Draw ellipses before and/or after the list as necessary */
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color_set ( CPAIR_SEPARATOR, NULL );
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mvaddstr ( ( SETTINGS_LIST_ROW - 1 ), ( SETTINGS_LIST_COL + 1 ),
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jump_scroll_is_first ( &ui->scroll ) ? " " : "..." );
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mvaddstr ( ( SETTINGS_LIST_ROW + SETTINGS_LIST_ROWS ),
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( SETTINGS_LIST_COL + 1 ),
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jump_scroll_is_last ( &ui->scroll ) ? " " : "..." );
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color_set ( CPAIR_NORMAL, NULL );
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/* Draw visible settings. */
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for ( i = 0; i < SETTINGS_LIST_ROWS; i++ ) {
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if ( ( widget->first_visible + i ) < widget->num_rows ) {
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select_setting_row ( widget,
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widget->first_visible + i );
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draw_setting_row ( widget );
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for ( i = 0 ; i < SETTINGS_LIST_ROWS ; i++ ) {
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if ( ( ui->scroll.first + i ) < ui->scroll.count ) {
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select_setting_row ( ui, ( ui->scroll.first + i ) );
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draw_setting_row ( ui );
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} else {
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clearmsg ( SETTINGS_LIST_ROW + i );
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}
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@ -446,69 +422,72 @@ static void reveal_setting_row ( struct setting_widget *widget,
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}
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/**
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* Reveal setting row
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* Select settings block
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*
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* @v widget Setting widget
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* @v ui Settings UI
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* @v settings Settings block
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*/
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static void init_widget ( struct setting_widget *widget,
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struct settings *settings ) {
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static void select_settings ( struct settings_ui *ui,
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struct settings *settings ) {
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widget->settings = settings_target ( settings );
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widget->num_rows = select_setting_row ( widget, 0 );
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widget->first_visible = SETTINGS_LIST_ROWS;
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draw_title_row ( widget );
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reveal_setting_row ( widget, 0 );
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select_setting_row ( widget, 0 );
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ui->settings = settings_target ( settings );
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ui->scroll.count = select_setting_row ( ui, 0 );
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ui->scroll.rows = SETTINGS_LIST_ROWS;
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ui->scroll.current = 0;
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ui->scroll.first = 0;
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draw_title_row ( ui );
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draw_setting_rows ( ui );
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select_setting_row ( ui, 0 );
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}
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static int main_loop ( struct settings *settings ) {
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struct setting_widget widget;
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struct settings_ui ui;
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unsigned int previous;
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int redraw = 1;
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int move;
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unsigned int next;
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int key;
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int rc;
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/* Print initial screen content */
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color_set ( CPAIR_NORMAL, NULL );
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memset ( &widget, 0, sizeof ( widget ) );
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init_widget ( &widget, settings );
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memset ( &ui, 0, sizeof ( ui ) );
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select_settings ( &ui, settings );
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while ( 1 ) {
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/* Redraw rows if necessary */
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if ( redraw ) {
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draw_info_row ( &widget );
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draw_instruction_row ( &widget );
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color_set ( ( widget.row.editing ?
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draw_info_row ( &ui );
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draw_instruction_row ( &ui );
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color_set ( ( ui.row.editing ?
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CPAIR_EDIT : CPAIR_SELECT ), NULL );
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draw_setting_row ( &widget );
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draw_setting_row ( &ui );
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color_set ( CPAIR_NORMAL, NULL );
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curs_set ( widget.row.editing );
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curs_set ( ui.row.editing );
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redraw = 0;
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}
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|
||||
if ( widget.row.editing ) {
|
||||
/* Edit setting, if we are currently editing */
|
||||
if ( ui.row.editing ) {
|
||||
|
||||
/* Sanity check */
|
||||
assert ( widget.row.setting.name != NULL );
|
||||
assert ( ui.row.setting.name != NULL );
|
||||
|
||||
/* Redraw edit box */
|
||||
color_set ( CPAIR_EDIT, NULL );
|
||||
draw_editbox ( &widget.row.editbox );
|
||||
draw_editbox ( &ui.row.editbox );
|
||||
color_set ( CPAIR_NORMAL, NULL );
|
||||
|
||||
/* Process keypress */
|
||||
key = edit_setting ( &widget, getkey ( 0 ) );
|
||||
key = edit_setting ( &ui, getkey ( 0 ) );
|
||||
switch ( key ) {
|
||||
case CR:
|
||||
case LF:
|
||||
if ( ( rc = save_setting ( &widget ) ) != 0 )
|
||||
if ( ( rc = save_setting ( &ui ) ) != 0 )
|
||||
alert ( " %s ", strerror ( rc ) );
|
||||
/* Fall through */
|
||||
case CTRL_C:
|
||||
select_setting_row ( &widget, widget.current );
|
||||
select_setting_row ( &ui, ui.scroll.current );
|
||||
redraw = 1;
|
||||
break;
|
||||
default:
|
||||
|
|
@ -516,72 +495,52 @@ static int main_loop ( struct settings *settings ) {
|
|||
break;
|
||||
}
|
||||
|
||||
} else {
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Process keypress */
|
||||
key = getkey ( 0 );
|
||||
move = 0;
|
||||
switch ( key ) {
|
||||
case KEY_UP:
|
||||
move = -1;
|
||||
break;
|
||||
case KEY_DOWN:
|
||||
move = +1;
|
||||
break;
|
||||
case KEY_PPAGE:
|
||||
move = ( widget.first_visible -
|
||||
widget.current - 1 );
|
||||
break;
|
||||
case KEY_NPAGE:
|
||||
move = ( widget.first_visible - widget.current
|
||||
+ SETTINGS_LIST_ROWS );
|
||||
break;
|
||||
case KEY_HOME:
|
||||
move = -widget.num_rows;
|
||||
break;
|
||||
case KEY_END:
|
||||
move = +widget.num_rows;
|
||||
break;
|
||||
case CTRL_D:
|
||||
if ( ! widget.row.setting.name )
|
||||
break;
|
||||
if ( ( rc = delete_setting ( widget.settings,
|
||||
&widget.row.setting ) ) != 0 ) {
|
||||
alert ( " %s ", strerror ( rc ) );
|
||||
}
|
||||
select_setting_row ( &widget, widget.current );
|
||||
/* Otherwise, navigate through settings */
|
||||
key = getkey ( 0 );
|
||||
move = jump_scroll_key ( &ui.scroll, key );
|
||||
if ( move ) {
|
||||
previous = ui.scroll.current;
|
||||
jump_scroll_move ( &ui.scroll, move );
|
||||
if ( ui.scroll.current != previous ) {
|
||||
draw_setting_row ( &ui );
|
||||
redraw = 1;
|
||||
break;
|
||||
case CTRL_X:
|
||||
return 0;
|
||||
case CR:
|
||||
case LF:
|
||||
if ( widget.row.settings ) {
|
||||
init_widget ( &widget,
|
||||
widget.row.settings );
|
||||
redraw = 1;
|
||||
}
|
||||
/* Fall through */
|
||||
default:
|
||||
if ( widget.row.setting.name ) {
|
||||
edit_setting ( &widget, key );
|
||||
redraw = 1;
|
||||
}
|
||||
break;
|
||||
if ( jump_scroll ( &ui.scroll ) )
|
||||
draw_setting_rows ( &ui );
|
||||
select_setting_row ( &ui, ui.scroll.current );
|
||||
}
|
||||
if ( move ) {
|
||||
next = ( widget.current + move );
|
||||
if ( ( int ) next < 0 )
|
||||
next = 0;
|
||||
if ( next >= widget.num_rows )
|
||||
next = ( widget.num_rows - 1 );
|
||||
if ( next != widget.current ) {
|
||||
draw_setting_row ( &widget );
|
||||
redraw = 1;
|
||||
reveal_setting_row ( &widget, next );
|
||||
select_setting_row ( &widget, next );
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Handle non-navigation keys */
|
||||
switch ( key ) {
|
||||
case CTRL_D:
|
||||
if ( ! ui.row.setting.name )
|
||||
break;
|
||||
if ( ( rc = delete_setting ( ui.settings,
|
||||
&ui.row.setting ) ) != 0 ){
|
||||
alert ( " %s ", strerror ( rc ) );
|
||||
}
|
||||
select_setting_row ( &ui, ui.scroll.current );
|
||||
redraw = 1;
|
||||
break;
|
||||
case CTRL_X:
|
||||
return 0;
|
||||
case CR:
|
||||
case LF:
|
||||
if ( ui.row.settings ) {
|
||||
select_settings ( &ui, ui.row.settings );
|
||||
redraw = 1;
|
||||
}
|
||||
/* Fall through */
|
||||
default:
|
||||
if ( ui.row.setting.name ) {
|
||||
edit_setting ( &ui, key );
|
||||
redraw = 1;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Reference in New Issue