mirror of
https://github.com/TryGhost/Ghost.git
synced 2024-12-24 11:22:19 +03:00
f66c992ad8
refs https://github.com/TryGhost/Team/issues/1149 - added a `@pageId` argument to `<GhHtmlIframe>`, if that value is different at the point of swapping iframes after re-rendering it will reset the scroll position instead of copying it from the to-be-hidden iframe - assigned `themeManagement.previewType` to `@pageId` so that it changes when switching between homepage and post previews
80 lines
2.4 KiB
JavaScript
80 lines
2.4 KiB
JavaScript
import Component from '@glimmer/component';
|
|
import {action} from '@ember/object';
|
|
|
|
export default class GhHtmlIframeComponent extends Component {
|
|
iframes = [];
|
|
renderedIframe = 0;
|
|
toRenderIframe = 1;
|
|
|
|
get hiddenIframeStyle() {
|
|
return 'position: absolute; visibility: hidden; border: none;';
|
|
}
|
|
|
|
get visibleIframeStyle() {
|
|
return 'border: none;';
|
|
}
|
|
|
|
@action
|
|
replaceIframeContents() {
|
|
const iframe = this.iframes[this.toRenderIframe];
|
|
|
|
if (iframe && this.args.html) {
|
|
iframe.contentWindow.document.open();
|
|
iframe.contentWindow.document.write(this.args.html);
|
|
iframe.contentWindow.document.close();
|
|
|
|
// force swap of iframes after a set timeout to account for slower connections
|
|
// so we display _something_ in the iframe even though it's still loading
|
|
this.swapTimeout = setTimeout(() => {
|
|
this.swapIframes(iframe);
|
|
}, 500);
|
|
}
|
|
}
|
|
|
|
@action
|
|
registerIframe(iframe) {
|
|
this.iframes.push(iframe);
|
|
|
|
if (this.iframes.indexOf(iframe) === 0) {
|
|
iframe.style = this.visibleIframeStyle;
|
|
this.replaceIframeContents();
|
|
}
|
|
|
|
if (this.iframes.indexOf(iframe) === 1) {
|
|
iframe.style = this.hiddenIframeStyle;
|
|
}
|
|
}
|
|
|
|
@action
|
|
didLoad(event) {
|
|
if (this.isDestroyed || this.isDestroying) {
|
|
return;
|
|
}
|
|
|
|
this.swapIframes(event.target);
|
|
}
|
|
|
|
swapIframes(renderedIframe) {
|
|
if (this.isDestroyed || this.isDestroying) {
|
|
return;
|
|
}
|
|
|
|
window.clearTimeout(this.swapTimeout);
|
|
|
|
if (this.iframes.indexOf(renderedIframe) !== this.renderedIframe) {
|
|
let newScrollTop = this.iframes[this.renderedIframe].contentDocument.body.scrollTop;
|
|
|
|
if (this._lastPageId !== this.args.pageId) {
|
|
newScrollTop = 0;
|
|
}
|
|
this._lastPageId = this.args.pageId;
|
|
|
|
this.iframes[this.toRenderIframe].contentDocument.body.scrollTop = newScrollTop;
|
|
this.iframes[this.toRenderIframe].style = this.visibleIframeStyle;
|
|
this.renderedIframe = this.toRenderIframe;
|
|
this.toRenderIframe = this.toRenderIframe === 0 ? 1 : 0;
|
|
this.iframes[this.toRenderIframe].style = this.hiddenIframeStyle;
|
|
}
|
|
}
|
|
}
|