🚀 go-pugleaf

In article <1992Sep28.225803.570@cssc-syd.tansu.com.au> richardf@cssc-syd.tansu.com.au (Richard Favero) writes:

    Could someone send me a small example of how to use a field editor
    and the associated action. I dont understand the usage.

FieldEditorCallback::accept is called when RET is entered.
FieldEditorCallback::cancel is called when ESC or '^G' is entered.

The following program outputs the string in the FieldEditor with
"accept/cancel" depending on what you typed.

#include <IV-look/dialogs.h>
#include <IV-look/field.h>
#include <IV-look/kit.h>
#include <InterViews/layout.h>
#include <InterViews/session.h>
#include <InterViews/window.h>
#include <OS/string.h>
#include <stdio.h>

class PrintIt {
public:
    virtual void accept(FieldEditor*);
    virtual void cancel(FieldEditor*);
};

declareFieldEditorCallback(PrintIt)
implementFieldEditorCallback(PrintIt)

void PrintIt::accept(FieldEditor* e) {
    if (e != nil) {
	printf("accept: %s\n", e->text()->string());
    }
}

void PrintIt::cancel(FieldEditor* e) {
    if (e != nil) {
	printf("cancel: %s\n", e->text()->string());
    }
}

int main (int argc, char** argv) {
    Session* session = new Session("Namer", argc, argv);
    WidgetKit& kit = *WidgetKit::instance();
    const LayoutKit& layout = *LayoutKit::instance(); 
    const DialogKit& dialog = *DialogKit::instance();
    PrintIt action;

    session->run_window(
        new ApplicationWindow(
            kit.inset_frame(
		layout.margin(
		    layout.vbox(
		        layout.hbox(
                            layout.vcenter(kit.label("Name:")),
		            layout.hspace(5.0),
                            layout.vcenter(
                                dialog.field_editor(
                                    "                ", kit.style(),
                                    new FieldEditorCallback(PrintIt)(
                                        &action,
                                        &PrintIt::accept,
                                        &PrintIt::cancel
                                    )
                                )
                            )
                        ),
			layout.vspace(10.0),
                        layout.hbox(
			    layout.hglue(50),
                            kit.push_button("Quit", kit.quit())
                        )
                    ),
                    20.0
                )
            )
        ) 
    );
}