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#include "history.h"
#include "app.h"
#include <the_Foundation/file.h>
#include <the_Foundation/path.h>
static const size_t maxStack_History_ = 50; /* back/forward navigable items */
void init_RecentUrl(iRecentUrl *d) {
init_String(&d->url);
d->scrollY = 0;
d->cachedResponse = NULL;
}
void deinit_RecentUrl(iRecentUrl *d) {
deinit_String(&d->url);
delete_GmResponse(d->cachedResponse);
}
iDefineTypeConstruction(RecentUrl)
iRecentUrl *copy_RecentUrl(const iRecentUrl *d) {
iRecentUrl *copy = new_RecentUrl();
set_String(©->url, &d->url);
copy->scrollY = d->scrollY;
copy->cachedResponse = d->cachedResponse ? copy_GmResponse(d->cachedResponse) : NULL;
return copy;
}
/*----------------------------------------------------------------------------------------------*/
struct Impl_History {
iArray recent; /* TODO: should be specific to a DocumentWidget */
size_t recentPos; /* zero at the latest item */
};
iDefineTypeConstruction(History)
void init_History(iHistory *d) {
init_Array(&d->recent, sizeof(iRecentUrl));
d->recentPos = 0;
}
void deinit_History(iHistory *d) {
clear_History(d);
deinit_Array(&d->recent);
}
iHistory *copy_History(const iHistory *d) {
iHistory *copy = new_History();
iConstForEach(Array, i, &d->recent) {
pushBack_Array(©->recent, copy_RecentUrl(i.value));
}
copy->recentPos = d->recentPos;
return copy;
}
void serialize_History(const iHistory *d, iStream *outs) {
writeU16_Stream(outs, d->recentPos);
writeU16_Stream(outs, size_Array(&d->recent));
iConstForEach(Array, i, &d->recent) {
const iRecentUrl *item = i.value;
serialize_String(&item->url, outs);
write32_Stream(outs, item->scrollY);
if (item->cachedResponse) {
write8_Stream(outs, 1);
serialize_GmResponse(item->cachedResponse, outs);
}
else {
write8_Stream(outs, 0);
}
}
}
void deserialize_History(iHistory *d, iStream *ins) {
clear_History(d);
d->recentPos = readU16_Stream(ins);
size_t count = readU16_Stream(ins);
while (count--) {
iRecentUrl item;
init_RecentUrl(&item);
deserialize_String(&item.url, ins);
item.scrollY = read32_Stream(ins);
if (read8_Stream(ins)) {
item.cachedResponse = new_GmResponse();
deserialize_GmResponse(item.cachedResponse, ins);
}
pushBack_Array(&d->recent, &item);
}
}
void clear_History(iHistory *d) {
iForEach(Array, s, &d->recent) {
deinit_RecentUrl(s.value);
}
clear_Array(&d->recent);
}
iRecentUrl *recentUrl_History(iHistory *d, size_t pos) {
if (isEmpty_Array(&d->recent)) return NULL;
return &value_Array(&d->recent, size_Array(&d->recent) - 1 - pos, iRecentUrl);
}
const iRecentUrl *constRecentUrl_History(const iHistory *d, size_t pos) {
if (isEmpty_Array(&d->recent)) return NULL;
return &constValue_Array(&d->recent, size_Array(&d->recent) - 1 - pos, iRecentUrl);
}
iRecentUrl *mostRecentUrl_History(iHistory *d) {
return recentUrl_History(d, d->recentPos);
}
const iRecentUrl *constMostRecentUrl_History(const iHistory *d) {
return constRecentUrl_History(d, d->recentPos);
}
const iString *url_History(const iHistory *d, size_t pos) {
const iRecentUrl *item = constRecentUrl_History(d, pos);
if (item) {
return &item->url;
}
return collectNew_String();
}
iRecentUrl *findUrl_History(iHistory *d, const iString *url) {
iReverseForEach(Array, i, &d->recent) {
if (cmpStringCase_String(url, &((iRecentUrl *) i.value)->url) == 0) {
return i.value;
}
}
return NULL;
}
void replace_History(iHistory *d, const iString *url) {
/* Update in the history. */
iRecentUrl *item = mostRecentUrl_History(d);
if (item) {
set_String(&item->url, url);
}
}
void add_History(iHistory *d, const iString *url ){
/* Cut the trailing history items. */
if (d->recentPos > 0) {
for (size_t i = 0; i < d->recentPos - 1; i++) {
deinit_RecentUrl(recentUrl_History(d, i));
}
removeN_Array(&d->recent, size_Array(&d->recent) - d->recentPos, iInvalidSize);
d->recentPos = 0;
}
/* Insert new item. */
const iRecentUrl *lastItem = recentUrl_History(d, 0);
if (!lastItem || cmpString_String(&lastItem->url, url) != 0) {
iRecentUrl item;
init_RecentUrl(&item);
set_String(&item.url, url);
pushBack_Array(&d->recent, &item);
/* Limit the number of items. */
if (size_Array(&d->recent) > maxStack_History_) {
deinit_RecentUrl(front_Array(&d->recent));
remove_Array(&d->recent, 0);
}
}
}
iBool goBack_History(iHistory *d) {
if (d->recentPos < size_Array(&d->recent) - 1) {
d->recentPos++;
postCommandf_App("open history:1 scroll:%d url:%s",
mostRecentUrl_History(d)->scrollY,
cstr_String(url_History(d, d->recentPos)));
return iTrue;
}
return iFalse;
}
iBool goForward_History(iHistory *d) {
if (d->recentPos > 0) {
d->recentPos--;
postCommandf_App("open history:1 url:%s", cstr_String(url_History(d, d->recentPos)));
return iTrue;
}
return iFalse;
}
const iGmResponse *cachedResponse_History(const iHistory *d) {
const iRecentUrl *item = constMostRecentUrl_History(d);
return item ? item->cachedResponse : NULL;
}
void setCachedResponse_History(iHistory *d, const iGmResponse *response) {
iRecentUrl *item = mostRecentUrl_History(d);
if (item) {
delete_GmResponse(item->cachedResponse);
item->cachedResponse = NULL;
if (category_GmStatusCode(response->statusCode) == categorySuccess_GmStatusCode) {
item->cachedResponse = copy_GmResponse(response);
}
}
}
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