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XCVI. Newt Functions

Einführung

This is a PHP language extension for RedHat Newt library, a terminal-based window and widget library for writing applications with user friendly interface. Once this extension is enabled in PHP it will provide the use of Newt widgets, such as windows, buttons, checkboxes, radiobuttons, labels, editboxes, scrolls, textareas, scales, etc. Use of this extension if very similar to the original Newt API of C programming language.

Anforderungen

This module uses the functions of the RedHat Newt library. You need libnewt version >= 0.51.0.

Installation

Diese PECL Erweiterung ist nicht Teil von PHP. Zusätzliche Informationen, wie neue Releases, Downloads Quelldateien, Maintainerinformation und ein CHANGELOG finden Sie hier: http://pecl.php.net/package/newt.

Für PHP 4 finden Sie die Quellen dieser PECL Erweiterung im ext/ Verzeichnis innerhalb der PHP Quellen oder unter dem PECL Link wie oben angegeben. In order to use these functions you must compile CGI or CLI PHP with newt support by using the --with-newt[=DIR] configure option.

Anmerkung: This extension is not available for Windows platform.
You may need also curses and slang libraries, in order to compile this extension. To specify locations of these libraries, use the following configuration options: --with-curses-dir=/path/to/libcurses --with-slang-dir=/path/to/libslang

Resource Typen

This extension uses two resource types: "newt component" and "newt grid". Resource type "newt component" is returned by functions, which create common newt widgets (for example: newt_button()) Resource type "newt grid" is a special link identifier for components, returned by newt grid factory functions (for example: newt_create_grid())

Vordefinierte Konstanten

Folgende Konstanten werden von dieser Erweiterung definiert und stehen nur zur Verfügung, wenn die Erweiterung entweder statisch in PHP kompiliert oder dynamisch zur Laufzeit geladen wurde.

Newt form exit reasons

Tabelle 1. Newt form exit reasons

constant	meaning
`NEWT_EXIT_HOTKEY`	hotkey defined by newt_form_add_hot_key() was pressed
`NEWT_EXIT_COMPONENT`	some component has caused form to exit
`NEWT_EXIT_FDREADY`	file descriptor specified in newt_form_watch_fd() is ready to be read or written to
`NEWT_EXIT_TIMER`	time specified in newt_form_set_timer() has elapsed

Newt colorsets

Tabelle 2. Newt colorsets

constant	meaning
`NEWT_COLORSET_ROOT`
`NEWT_COLORSET_BORDER`
`NEWT_COLORSET_WINDOW`
`NEWT_COLORSET_SHADOW`
`NEWT_COLORSET_TITLE`
`NEWT_COLORSET_BUTTON`
`NEWT_COLORSET_ACTBUTTON`
`NEWT_COLORSET_CHECKBOX`
`NEWT_COLORSET_ACTCHECKBOX`
`NEWT_COLORSET_ENTRY`
`NEWT_COLORSET_LABEL`
`NEWT_COLORSET_LISTBOX`
`NEWT_COLORSET_ACTLISTBOX`
`NEWT_COLORSET_TEXTBOX`
`NEWT_COLORSET_ACTTEXTBOX`
`NEWT_COLORSET_HELPLINE`
`NEWT_COLORSET_ROOTTEXT`
`NEWT_COLORSET_ROOTTEXT`
`NEWT_COLORSET_EMPTYSCALE`
`NEWT_COLORSET_FULLSCALE`
`NEWT_COLORSET_DISENTRY`
`NEWT_COLORSET_COMPACTBUTTON`
`NEWT_COLORSET_ACTSELLISTBOX`
`NEWT_COLORSET_SELLISTBOX`

Newt argument flags

Tabelle 3. Newt argument flags

constant	meaning
`NEWT_ARG_LAST`
`NEWT_ARG_APPEND`

Newt Flags Sense

Tabelle 4. Newt Flags Sense

constant	meaning
`NEWT_FLAGS_SET`
`NEWT_FLAGS_RESET`
`NEWT_FLAGS_TOGGLE`

Newt Components Flags

Tabelle 5. Newt Components Flags

constant	meaning
`NEWT_FLAG_RETURNEXIT`	Exit form, when component is activated
`NEWT_FLAG_HIDDEN`	Component is hidden
`NEWT_FLAG_SCROLL`	Component is scrollable
`NEWT_FLAG_DISABLED`	Component is disabled
`NEWT_FLAG_BORDER`
`NEWT_FLAG_WRAP`	Wrap text
`NEWT_FLAG_NOF12`	Don't exit form on pressing F12
`NEWT_FLAG_MULTIPLE`
`NEWT_FLAG_SELECTED`	Component is selected
`NEWT_FLAG_CHECKBOX`	Component is checkbox
`NEWT_FLAG_PASSWORD`	Entry component is password entry
`NEWT_FLAG_SHOWCURSOR`	Show cursor

File Descriptor Flags

Tabelle 6. File Descriptor Flags

constant	meaning
`NEWT_FD_READ`
`NEWT_FD_WRITE`
`NEWT_FD_EXCEPT`

Checkbox Tree Flags

Tabelle 7. Checkbox Tree Flags

constant	meaning
`NEWT_CHECKBOXTREE_UNSELECTABLE`
`NEWT_CHECKBOXTREE_HIDE_BOX`
`NEWT_CHECKBOXTREE_COLLAPSED`
`NEWT_CHECKBOXTREE_EXPANDED`
`NEWT_CHECKBOXTREE_UNSELECTED`
`NEWT_CHECKBOXTREE_SELECTED`

Entry Flags

Tabelle 8. Entry Flags

constant	meaning
`NEWT_ENTRY_SCROLL`
`NEWT_ENTRY_HIDDEN`
`NEWT_ENTRY_RETURNEXIT`
`NEWT_ENTRY_DISABLED`

Listbox Flags

Tabelle 9. Listbox Flags

constant	meaning
`NEWT_LISTBOX_RETURNEXIT`

Textbox Flags

Tabelle 10. Textbox Flags

constant	meaning
`NEWT_TEXTBOX_WRAP`	Wrap text in the textbox
`NEWT_TEXTBOX_SCROLL`	Scroll text in the textbox

Form Flags

Tabelle 11. Form Flags

constant	meaning
`NEWT_FORM_NOF12`	Don't exit form on F12 press

Newt Keys

Tabelle 12. Newt Keys

constant	meaning
`NEWT_KEY_TAB`
`NEWT_KEY_ENTER`
`NEWT_KEY_SUSPEND`
`NEWT_KEY_ESCAPE`
`NEWT_KEY_RETURN`
`NEWT_KEY_EXTRA_BASE`
`NEWT_KEY_UP`
`NEWT_KEY_DOWN`
`NEWT_KEY_LEFT`
`NEWT_KEY_RIGHT`
`NEWT_KEY_BKSPC`
`NEWT_KEY_DELETE`
`NEWT_KEY_HOME`
`NEWT_KEY_END`
`NEWT_KEY_UNTAB`
`NEWT_KEY_PGUP`
`NEWT_KEY_PGDN`
`NEWT_KEY_INSERT`
`NEWT_KEY_F1`
`NEWT_KEY_F2`
`NEWT_KEY_F3`
`NEWT_KEY_F4`
`NEWT_KEY_F5`
`NEWT_KEY_F6`
`NEWT_KEY_F7`
`NEWT_KEY_F8`
`NEWT_KEY_F9`
`NEWT_KEY_F10`
`NEWT_KEY_F11`
`NEWT_KEY_F12`
`NEWT_KEY_RESIZE`

Newt Anchors

Tabelle 13. Newt Anchors

constant	meaning
`NEWT_ANCHOR_LEFT`
`NEWT_ANCHOR_RIGHT`
`NEWT_ANCHOR_TOP`
`NEWT_ANCHOR_BOTTOM`

Grid Flags

Tabelle 14. Grid Flags

constant	meaning
`NEWT_GRID_FLAG_GROWX`
`NEWT_GRID_FLAG_GROWY`
`NEWT_GRID_EMPTY`
`NEWT_GRID_COMPONENT`
`NEWT_GRID_SUBGRID`

Beispiele

This example is a PHP port of RedHat 'setup' utility dialog, executed in text mode.

Beispiel 1. Newt Usage Example


<?php
    newt_init ();
    newt_cls ();
    
    newt_draw_root_text (0, 0, "Test Mode Setup Utility 1.12");
    newt_push_help_line (null);
    newt_draw_root_text (-30, 0, "(c) 1999-2002 RedHat, Inc");

    newt_get_screen_size (&$rows, &$cols);
    
    newt_open_window ($rows/2-17, $cols/2-10, 34, 17, "Choose a Tool");

    $form = newt_form ();

    $list = newt_listbox (3, 2, 10);
    
    foreach (array (
        "Authentication configuration",
        "Firewall configuration",
        "Mouse configuration",
        "Network configuration",
        "Printer configuration",
        "System services") as $l_item)
    {
        newt_listbox_add_entry ($list, $l_item, $l_item);
    }

    $b1 = newt_button (5, 12, "Run Tool");
    $b2 = newt_button (21, 12, "Quit");
    
    newt_form_add_component ($form, $list);
    newt_form_add_components ($form, array($b1, $b2));

    newt_refresh ();
    newt_run_form ($form);

    newt_pop_window ();
    newt_pop_help_line ();
    newt_finished ();
    newt_form_destroy ($form);
?>

Inhaltsverzeichnis
newt_bell -- Send a beep to the terminal
newt_button_bar --
newt_button --
newt_centered_window -- Open a centered window of the specified size
newt_checkbox_get_value --
newt_checkbox_set_flags --
newt_checkbox_set_value --
newt_checkbox_tree_add_item -- *
newt_checkbox_tree_find_item --
newt_checkbox_tree_get_current --
newt_checkbox_tree_get_entry_value --
newt_checkbox_tree_get_multi_selection --
newt_checkbox_tree_get_selection --
newt_checkbox_tree_multi --
newt_checkbox_tree_set_current --
newt_checkbox_tree_set_entry_value --
newt_checkbox_tree_set_entry --
newt_checkbox_tree_set_width --
newt_checkbox_tree --
newt_checkbox --
newt_clear_key_buffer -- Discards the contents of the terminal's input buffer without waiting for additional input
newt_cls --
newt_compact_button --
newt_component_add_callback --
newt_component_takes_focus --
newt_create_grid --
newt_cursor_off --
newt_cursor_on --
newt_delay --
newt_draw_form --
newt_draw_root_text -- Displays the string text at the position indicated
newt_entry_get_value --
newt_entry_set_filter --
newt_entry_set_flags --
newt_entry_set --
newt_entry --
newt_finished -- Uninitializes newt interface
newt_form_add_component -- Adds a single component to the form
newt_form_add_components -- Add several components to the form
newt_form_add_host_key --
newt_form_destroy -- Destroys a form
newt_form_get_current --
newt_form_run -- Runs a form
newt_form_set_background --
newt_form_set_height --
newt_form_set_size --
newt_form_set_timer --
newt_form_set_width --
newt_form_watch_fd --
newt_form -- Create a form
newt_get_screen_size -- Fills in the passed references with the current size of the terminal
newt_grid_add_components_to_form --
newt_grid_basic_window --
newt_grid_free --
newt_grid_get_size --
newt_grid_h_close_stacked --
newt_grid_h_stacked --
newt_grid_place --
newt_grid_set_field --
newt_grid_simple_window --
newt_grid_v_close_stacked --
newt_grid_v_stacked --
newt_grid_wrapped_window_at --
newt_grid_wrapped_window --
newt_init -- Initialize newt
newt_label_set_text --
newt_label --
newt_listbox_append_entry --
newt_listbox_clear_selection --
newt_listbox_clear --
newt_listbox_delete_entry --
newt_listbox_get_current --
newt_listbox_get_selection --
newt_listbox_insert_entry --
newt_listbox_item_count --
newt_listbox_select_item --
newt_listbox_set_current_by_key --
newt_listbox_set_current --
newt_listbox_set_data --
newt_listbox_set_entry --
newt_listbox_set_width --
newt_listbox --
newt_listitem_get_data --
newt_listitem_set --
newt_listitem --
newt_open_window -- Open a window of the specified size and position
newt_pop_help_line -- Replaces the current help line with the one from the stack
newt_pop_window -- Removes the top window from the display
newt_push_help_line -- Saves the current help line on a stack, and displays the new line
newt_radio_get_current --
newt_radiobutton --
newt_redraw_help_line --
newt_reflow_text --
newt_refresh -- Updates modified portions of the screen
newt_resize_screen --
newt_resume -- Resume using the newt interface after calling newt_suspend()
newt_run_form -- Runs a form
newt_scale_set --
newt_scale --
newt_scrollbar_set --
newt_set_help_callback --
newt_set_suspend_callback -- Set a callback function which gets invoked when user presses the suspend key
newt_suspend -- Tells newt to return the terminal to its initial state
newt_textbox_get_num_lines --
newt_textbox_reflowed --
newt_textbox_set_height --
newt_textbox_set_text --
newt_textbox --
newt_vertical_scrollbar --
newt_wait_for_key -- Doesn't return until a key has been pressed
newt_win_choice --
newt_win_entries --
newt_win_menu --
newt_win_message --
newt_win_messagev --
newt_win_ternary --