discourse/app/assets/javascripts/admin/components/ace-editor.js

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import Component from "@ember/component";
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import loadScript from "discourse/lib/load-script";
import { observes } from "discourse-common/utils/decorators";
import { on } from "@ember/object/evented";
export default Component.extend({
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mode: "css",
classNames: ["ace-wrapper"],
_editor: null,
_skipContentChangeEvent: null,
disabled: false,
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@observes("editorId")
editorIdChanged() {
if (this.autofocus) {
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this.send("focus");
}
},
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@observes("content")
contentChanged() {
const content = this.content || "";
if (this._editor && !this._skipContentChangeEvent) {
this._editor.getSession().setValue(content);
}
},
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@observes("mode")
modeChanged() {
if (this._editor && !this._skipContentChangeEvent) {
this._editor.getSession().setMode("ace/mode/" + this.mode);
}
},
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@observes("disabled")
disabledStateChanged() {
this.changeDisabledState();
},
changeDisabledState() {
const editor = this._editor;
if (editor) {
const disabled = this.disabled;
editor.setOptions({
readOnly: disabled,
highlightActiveLine: !disabled,
highlightGutterLine: !disabled
});
editor.container.parentNode.setAttribute("data-disabled", disabled);
}
},
_destroyEditor: on("willDestroyElement", function() {
if (this._editor) {
this._editor.destroy();
this._editor = null;
}
if (this.appEvents) {
// xxx: don't run during qunit tests
this.appEvents.off("ace:resize", this, "resize");
}
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$(window).off("ace:resize");
}),
resize() {
if (this._editor) {
this._editor.resize();
}
},
didInsertElement() {
this._super(...arguments);
loadScript("/javascripts/ace/ace.js").then(() => {
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window.ace.require(["ace/ace"], loadedAce => {
if (!this.element || this.isDestroying || this.isDestroyed) {
return;
}
const editor = loadedAce.edit(this.element.querySelector(".ace"));
editor.setTheme("ace/theme/chrome");
editor.setShowPrintMargin(false);
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editor.setOptions({ fontSize: "14px" });
editor.getSession().setMode("ace/mode/" + this.mode);
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editor.on("change", () => {
this._skipContentChangeEvent = true;
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this.set("content", editor.getSession().getValue());
this._skipContentChangeEvent = false;
});
editor.$blockScrolling = Infinity;
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editor.renderer.setScrollMargin(10, 10);
this.element.setAttribute("data-editor", editor);
this._editor = editor;
this.changeDisabledState();
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$(window)
.off("ace:resize")
.on("ace:resize", () => this.appEvents.trigger("ace:resize"));
if (this.appEvents) {
// xxx: don't run during qunit tests
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this.appEvents.on("ace:resize", this, "resize");
}
if (this.autofocus) {
this.send("focus");
}
});
});
},
actions: {
focus() {
if (this._editor) {
this._editor.focus();
this._editor.navigateFileEnd();
}
}
}
});