EmbAJAXOutputDriverGeneric.h

 
#ifndef EMBAJAXOUTPUTDRIVERGENERIC_H
#define EMBAJAXOUTPUTDRIVERGENERIC_H
 
#if defined (EMBAJAX_OUTUPUTDRIVER_IMPLEMENTATION)
#error Duplicate definition of output driver. Fix your include-directives.
#endif
#define EMBAJAX_OUTUPUTDRIVER_IMPLEMENTATION
 
#if not defined EmbAJAXOutputDriverWebServerClass
#error Please define EmbAJAXOutputDriverWebServerClass or #include appropriate hardware specific driver
#endif
 
// For EmbAJAXPage. Important to include after defining EMBAJAX_OUTUPUTDRIVER_IMPLEMENTATION
#include "EmbAJAX.h"
 
class EmbAJAXOutputDriverGeneric : public EmbAJAXOutputDriverBase {
public:
    EmbAJAXOutputDriverGeneric(EmbAJAXOutputDriverWebServerClass *server) {
        EmbAJAXBase::setDriver(this);
        _server = server;
    }
    void printHeader(bool html) override {
        _server->setContentLength(CONTENT_LENGTH_UNKNOWN);
        if (html) {
            _server->send(200, "text/html", "");
        } else {
            _server->send(200, "text/json", "");
        }
    }
    void printContent(const char *content) override {
        if (content[0] != '\0') _server->sendContent(content);  // NOTE: There seems to be a bug in the ESP8266 server when sending empty string.
    }
    const char* getArg(const char* name, char* buf, int buflen) override {
        _server->arg(name).toCharArray (buf, buflen);
        return buf;
    }
    void installPage(EmbAJAXPageBase *page, const char *path, void (*change_callback)()=0) override {
        _server->on(path, [=]() {
             if (_server->method() == HTTP_POST) {  // AJAX request
                 page->handleRequest(change_callback);
             } else {  // Page load
                 page->printPage();
             }
        });
    }
    void loopHook() override {
        _server->handleClient();
    };
private:
    EmbAJAXOutputDriverWebServerClass *_server;
};
 
typedef EmbAJAXOutputDriverGeneric EmbAJAXOutputDriver;
 
#endif