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Work/non template container #47

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6c0aec4
Create a template-free alternative to EmbAJAXContainer
tfry-git Jan 12, 2020
6aa6335
This EmbAJAXElementList c'tor looks fairly promising, but I'll have t…
tfry-git Jan 19, 2020
790e6ad
Make variadic c'tor type-safe
tfry-git Jan 19, 2020
57643ae
Adds some more constness. This can help save some bytes
tfry-git Jan 19, 2020
54cb2bf
More work on EmbAJAXElementList
tfry-git Jan 10, 2022
c3938ee
Remove obsolete EmbAJAXPageBase class
tfry-git Jan 10, 2022
501b7b2
Merge branch 'master' into work/non-template-container
tfry-git Jan 10, 2022
de150cc
Deprecate obsolete classes / functions
tfry-git Jan 10, 2022
1e630d0
Add convenience constructors to page and hideable container.
tfry-git Jan 10, 2022
ba1823d
Update examples
tfry-git Jan 10, 2022
2745014
- Fix crash due to array of group button pointers going out of scope.
tfry-git Jan 12, 2022
a52813c
Fix comment.
tfry-git Jan 12, 2022
37e187d
Continue work on non-templated containers
tfry-git Mar 12, 2023
d77a4b4
Elaborate comment
tfry-git Mar 12, 2023
55cf808
Merge branch 'master' into work/non-template-container
tfry-git Apr 29, 2023
556d8e0
New draft for EmbAJAXElementList c'tor; small refinements
tfry-git Apr 30, 2023
0fb7c7a
Merge branch 'master' into work/non-template-container
tfry-git Apr 30, 2023
03274bd
Tweak constructors some more
tfry-git Apr 30, 2023
a701a3f
Avoid reorder (fix compilation on overly pedantic compiler)
tfry-git Apr 30, 2023
8b0e770
More constexpr constructors
tfry-git May 2, 2023
592e376
Convert radio group to non-templated (with compatiblity layer, for now)
tfry-git May 4, 2023
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29 changes: 12 additions & 17 deletions EmbAJAX.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -156,13 +156,6 @@ void EmbAJAXConnectionIndicator::print() const {

////////////////////////////// EmbAJAXElement /////////////////////////////

/** @param id: The id for the element. Note that the string is not copied. Do not use a temporary string in this place. Also, do keep it short. */
EmbAJAXElement::EmbAJAXElement(const char* id) : EmbAJAXBase() {
_id = id;
_flags = 1 << EmbAJAXBase::Visibility | 1 << EmbAJAXBase::Enabledness;
revision = 1;
}

bool EmbAJAXElement::sendUpdates(uint16_t since, bool first) {
if (!changed(since)) return false;
if (!first) _driver->printContent(",\n");
Expand Down Expand Up @@ -209,21 +202,21 @@ void EmbAJAXElement::printTextInput(size_t SIZE, const char* _value) const {

//////////////////////// EmbAJAXContainer ////////////////////////////////////

void EmbAJAXBase::printChildren(EmbAJAXBase** _children, size_t NUM) const {
void EmbAJAXBase::printChildren(EmbAJAXBase* const* _children, size_t NUM) const {
for (size_t i = 0; i < NUM; ++i) {
_children[i]->print();
}
}

bool EmbAJAXBase::sendUpdates(EmbAJAXBase** _children, size_t NUM, uint16_t since, bool first) {
bool EmbAJAXBase::sendUpdates(EmbAJAXBase* const* _children, size_t NUM, uint16_t since, bool first) {
for (size_t i = 0; i < NUM; ++i) {
bool sent = _children[i]->sendUpdates(since, first);
if (sent) first = false;
}
return !first;
}

EmbAJAXElement* EmbAJAXBase::findChild(EmbAJAXBase** _children, size_t NUM, const char*id) const {
EmbAJAXElement* EmbAJAXBase::findChild(EmbAJAXBase* const* _children, size_t NUM, const char*id) const {
for (size_t i = 0; i < NUM; ++i) {
EmbAJAXElement* child = _children[i]->toElement();
if (child) {
Expand Down Expand Up @@ -529,12 +522,13 @@ void EmbAJAXOptionSelectBase::updateFromDriverArg(const char* argname) {

//////////////////////// EmbAJAXPage /////////////////////////////

void EmbAJAXBase::printPage(EmbAJAXBase** _children, size_t NUM, const char* _title, const char* _header_add, uint16_t _min_interval) const {
void EmbAJAXPage::print() const {
#if EMBAJAX_DEBUG > 2
time_t start = millis();
#endif

_driver->printHeader(true);
_driver->printFormatted("<!DOCTYPE html>\n<HTML><HEAD><TITLE>", PLAIN_STRING(_title), "</TITLE>\n<SCRIPT>\n"
_driver->printFormatted("<!DOCTYPE html>\n<HTML><HEAD><TITLE>", PLAIN_STRING(p.title), "</TITLE>\n<SCRIPT>\n"

"var serverrevision = 0;\n"
"var request_queue = [];\n" // requests waiting to be sent
Expand All @@ -553,7 +547,7 @@ void EmbAJAXBase::printPage(EmbAJAXBase** _children, size_t NUM, const char* _ti
"var prev_request = 0;\n"
"function sendQueued() {\n"
" var now = new Date().getTime();\n"
" if (num_waiting > 0 || (now - prev_request < ", INTEGER_VALUE(_min_interval), ")) return;\n"
" if (num_waiting > 0 || (now - prev_request < ", INTEGER_VALUE(p.min_interval), ")) return;\n"
" var e = request_queue.shift();\n"
" if (!e && (now - prev_request < 1000)) return;\n"
" if (!e) e = {id: '', value: ''};\n" //Nothing in queue, but last request more than 1000 ms ago? Send a ping to query for updates
Expand All @@ -573,7 +567,7 @@ void EmbAJAXBase::printPage(EmbAJAXBase** _children, size_t NUM, const char* _ti
" req.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');\n"
" req.send('id=' + e.id + '&value=' + encodeURIComponent(e.value) + '&revision=' + serverrevision);\n"
"}\n"
"window.setInterval(sendQueued, ", INTEGER_VALUE(_min_interval/2+1), ");\n"
"window.setInterval(sendQueued, ", INTEGER_VALUE(p.min_interval/2+1), ");\n"

"function doUpdates(response) {\n"
" serverrevision = response.revision;\n"
Expand All @@ -595,7 +589,7 @@ void EmbAJAXBase::printPage(EmbAJAXBase** _children, size_t NUM, const char* _ti
" }\n"
"}\n"

"</SCRIPT>\n", PLAIN_STRING(_header_add),
"</SCRIPT>\n", PLAIN_STRING(p.header_add),
"</HEAD>\n<BODY><FORM autocomplete=\"off\" onSubmit=\"return false;\">\n");
// NOTE: The nasty thing about autocomplete is that it does not trigger onChange() functions, but also the
// "restore latest settings after client reload" is questionable in our use-case.
Expand All @@ -611,7 +605,8 @@ void EmbAJAXBase::printPage(EmbAJAXBase** _children, size_t NUM, const char* _ti
#endif
}

void EmbAJAXBase::handleRequest(EmbAJAXBase** _children, size_t NUM, void (*change_callback)()) {
void EmbAJAXPage::handleRequest(void (*change_callback)()) {
_latest_ping = millis();
char conversion_buf[EMBAJAX_MAX_ID_LEN];

// handle value changes sent from client
Expand Down Expand Up @@ -657,7 +652,7 @@ void EmbAJAXBase::handleRequest(EmbAJAXBase** _children, size_t NUM, void (*chan
// then relay value changes that have occured in the server (possibly in response to those sent)
_driver->printHeader(false);
_driver->printFormatted("{\"revision\": ", INTEGER_VALUE(_driver->revision()), ",\n\"updates\": [\n");
sendUpdates(_children, NUM, client_revision, true);
sendUpdates(client_revision, true);
_driver->printContent("\n]}\n");

/* Explanation on revision handling:
Expand Down
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