How to corrent internal path handling?

#include <Wt/WApplication>
#include <Wt/WStackedWidget>
#include <Wt/WContainerWidget>
#include <Wt/WEnvironment>
#include <Wt/WImage>

#include <iostream>

using namespace std;
using namespace Wt;


class WebApp : public WApplication
{
public:
    WebApp(const WEnvironment&);
    void path_handler();

    // path helpers
    void change_path_to_entry(void) {  setInternalPath("/entry"); }
    void change_path_to_login(void) {  setInternalPath("/login"); }

private:
    WStackedWidget *content;
    WContainerWidget *page_entry, *page_login;
};


// Constructor
WebApp::WebApp(const WEnvironment &env) : WApplication(env)
{
    setTitle("demo");
    internalPathChanged().connect(this, &WebApp::path_handler);
    content = new WStackedWidget(this->root());
    setInternalPath("/");


    // entry page
    WImage *img_entry = new WImage("/resources/login.png", "LOGIN");
    img_entry->clicked().connect(this, &WebApp::change_path_to_login);

    // login page
    WImage *img_login = new WImage("/resources/entry.png", "ENTRY");
    img_login->clicked().connect(this, &WebApp::change_path_to_entry);

    page_entry = new WContainerWidget;
    page_entry->addWidget(img_login);

    page_login = new WContainerWidget;
    page_login->addWidget(img_entry);

    content->addWidget(page_entry);
    content->addWidget(page_login);

    content->setCurrentWidget(page_entry);
}

void WebApp::path_handler()
{
    string current_path = internalPath();

    if(current_path == "/login")
        content->setCurrentWidget(page_login);

    if(current_path == "/entry")
        content->setCurrentWidget(page_entry);

    cout << "INTERNAL PATH HAS BEEN CHANGED!" << endl;
}


WApplication *create_app(const WEnvironment &env)
{
return new WebApp(env);
}

int main(int argc, char **argv)
{
return WRun(argc, argv, &create_app);
}

In console log output, i can not find my message "INTERNAL PATH HAS BEEN CHANGED!".

Replies (3)

RE: How to corrent internal path handling? - Added by Koen Deforche over 8 years ago

Hey,

You would get it by calling setInternalPath(path, true). But what you really want is this:

WImage *img_entry = new WImage("/resources/login.png", "LOGIN");

WAnchor *a_entry = new WAnchor(WLink(WLink::InternalPath, "/login"), img_entry);

page_login->addWidget(img_login);

It's shorter, but also better, since it allows a user for example to also open the link in a new tab, at least if you replace the 'setInternalPath("/");' with a 'path_handler()' call at the end of the constructor.

Koen

RE: How to corrent internal path handling? - Added by ioann sys over 8 years ago

Koen, thank you for answer!

My problem in function setInternalPath whith second bool arg. Now it work for me. I try your way and used WAnchor, but my image can not been clickable

// title and theme setup
// Constructor
    setTitle(settings.get(SETTING[APP_NAME]));
    this->setTheme(new WBootstrapTheme());

    // create content
    page = new WContainerWidget(this->root());
    _content = new WStackedWidget(page);

    page_entry = new WContainerWidget;
    this->setInternalPath("/entry");

    print_h(page_entry, settings.get(SETTING[APP_NAME]), 1);

    WImage *img = new WImage("/resources/images/login.png", "Press to login");
    img->setId("image_button_login");
    img->setToolTip("Press to login");
    WAnchor *anch1 = new WAnchor(WLink(WLink::InternalPath, "/login"), img);
    page_entry->addWidget(img);
    page_entry->setContentAlignment(AlignCenter | AlignMiddle);

    _content->addWidget(page_entry);
    _content->setCurrentWidget(page_entry);
    this->internalPathChanged().connect(this, &_c_web_app::path_handle);

So, my image-button "login.png" not clickable.

s.: sorry for my bad English

RE: How to corrent internal path handling? - Added by ioann sys over 8 years ago

I try next:

WImage *img = new WImage("login.png", "LOGIN");
WAnchor *anch1 = new WAnchor(WLink(WLink::internalPath, "/login"));
anch1->setImage(img);
page_entry-addWidget(anch1);

now it work for me. Koen, big thank you!

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