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maint(pat inject): Modernize some parts of pat inject. #1161

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95 changes: 54 additions & 41 deletions src/pat/inject/inject.js
Original file line number Diff line number Diff line change
Expand Up @@ -310,7 +310,6 @@ const inject = {
return false;
}
cfg.$target = this.createTarget(cfg.target);
cfg.$injected = cfg.$target;
}
return true;
},
Expand Down Expand Up @@ -418,22 +417,35 @@ const inject = {
/* Called after the XHR has succeeded and we have a new $source
* element to inject.
*/
if (cfg.sourceMod === "content") {
$source = $source.contents();
const wrapper = document.createElement("div");
if ($source.length > 0) {
if (cfg.sourceMod === "content") {
wrapper.innerHTML = $source[0].innerHTML;
} else {
wrapper.innerHTML = $source[0].outerHTML;
}

for (const img of wrapper.querySelectorAll("img")) {
events.add_event_listener(
img,
"inject_img_load",
(e) => {
$(e.currentTarget).trigger("pat-inject-content-loaded");
},
{ once: true }
);
}
}
let $src;
$src = $source.safeClone();
$src.findInclusive("img").on("load", (e) => {
$(e.currentTarget).trigger("pat-inject-content-loaded");
});

const $injected = cfg.$injected || $src;
// Copy, because after insertion wrapper.children is empty.
const source_nodes = [...wrapper.childNodes];

// Now the injection actually happens.
if (this._inject(trigger, $src, $(target), cfg)) {
if (this._inject(trigger, source_nodes, target, cfg)) {
// Update history
this._update_history(cfg, trigger, title);
// Post-injection
this._afterInjection($el, $injected, cfg);
this._afterInjection($el, $(source_nodes), cfg);
}
},

Expand All @@ -451,10 +463,14 @@ const inject = {
history.pushState({ url: cfg.url }, "", cfg.url);
}
// Also inject title element if we have one
if (title)
this._inject(trigger, title, $("title"), {
action: "element",
});
if (title) {
const title_el = document.querySelector("title");
if (title_el) {
this._inject(trigger, title, title_el, {
action: "element",
});
}
}
}
},

Expand Down Expand Up @@ -661,9 +677,6 @@ const inject = {

// clean up
cfgs.forEach((cfg) => {
if ("$injected" in cfg) {
cfg.$injected.remove();
}
cfg.$target.removeClass(cfg.loadingClass);
$el.removeClass(cfg.executingClass);
});
Expand Down Expand Up @@ -770,45 +783,45 @@ const inject = {
}
},

_inject(trigger, $source, $target, cfg) {
// action to jquery method mapping, except for "content"
// and "element"
const method = {
contentbefore: "prepend",
contentafter: "append",
elementbefore: "before",
elementafter: "after",
}[cfg.action];

_inject(trigger, source, target, cfg) {
if (cfg.source === "none") {
$target.replaceWith("");
// Special case. Clear the target after ajax call.
target.replaceWith("");
return true;
}
if ($source.length === 0) {
log.warn("Aborting injection, source not found:", $source);
if (source.length === 0) {
log.warn("Aborting injection, source not found:", source);
$(trigger).trigger("pat-inject-missingSource", {
url: cfg.url,
selector: cfg.source,
});
return false;
}
if (cfg.target === "none")
if (cfg.target === "none") {
// Special case. Don't do anything, we don't want any result
return true;
if ($target.length === 0) {
log.warn("Aborting injection, target not found:", $target);
}
if (!target) {
log.warn("Aborting injection, target not found:", target);
$(trigger).trigger("pat-inject-missingTarget", {
selector: cfg.target,
});
return false;
}
if (cfg.action === "content") {
$target.empty().append($source);
} else if (cfg.action === "element") {
$target.replaceWith($source);
} else {
$target[method]($source);
}

// cfg.action to DOM method mapping
const method = {
content: "replaceChildren",
contentafter: "append",
contentbefore: "prepend",
element: "replaceWith",
elementafter: "after",
elementbefore: "before",
}[cfg.action];

// Inject the content HERE!
target[method](...source);

return true;
},

Expand Down