On 2011-06-01, John Robson <[email protected]> wrote:
> WAnchor *a = new WAnchor("", "text");
> a->setRefInternalPath("LinkName");
> a->clicked().connect(this, &WtApplication::clickLink);
> void clickLink() {
> .....
> }
Hm, the '.....' should somehow scroll the page to the named anchor?
I tried it - with mixed results (firefox 3.6, chromium), here is the
code, and then follows some comments:
#include <Wt/WApplication>
#include <Wt/WLogger>
#include <Wt/WAnchor>
#include <Wt/WText>
using namespace Wt;
using namespace std;
class Main : public WApplication {
private:
WText *named_;
public:
Main(const WEnvironment &e)
: WApplication(e)
{
log("info") << "Constructing new session";
WAnchor *x = new WAnchor("", "Jump to the middle", root());
x->setRefInternalPath("#my_anchor"); // XXX # is not displayed
x->clicked().connect(this, &Main::clicked);
for (size_t i = 0; i < 500; ++i) {
WContainerWidget *a = new WContainerWidget(root());
WText *t = new WText(a);
t->setText("Hello World");
}
named_ = new WText(root());
named_->setTextFormat(XHTMLUnsafeText);
named_->setText("<div><a name=\"my_anchor\"/></div>");
for (size_t i = 0; i < 500; ++i) {
WContainerWidget *a = new WContainerWidget(root());
WText *t = new WText(a);
t->setText("end");
}
}
void clicked()
{
log("info") << "got clicked!";
// XXX Now how to scroll to the middle?
named_->show();
}
};
Wt::WApplication *create_app(const Wt::WEnvironment& env)
{
return new Main(env);
}
int main(int argc, char **argv)
{
return WRun(argc, argv, &create_app);
}
- In Firefox 3.6 when hovering over the link the browser displays
'http://127.0.0.1:8080/my_anchor' - clicking on it leads to
'http://127.0.0.1:8080/#my_anchor' and the browser jumps to the named
link.
But I suspect that this is just a side-effect of the used url scheme
- in Chromium the hovering displays the same url, but clicking on it
leads to a newly created session (== a reload) - after the reload
'http://127.0.0.1:8080/my_anchor' is displayed in the url-bar
- Looking at the html code inside chromium ('inspect element') yields
503 matches of 'my_anchor' - why? Inside firefox ('View selection
source') the '<a name="my_anchor"/> is also duplicated several times
when looking at the source
Best regards
Georg
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