58 lines
2.0 KiB
JavaScript
58 lines
2.0 KiB
JavaScript
import Ember from 'ember';
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import setScrollClassName from 'ghost/utils/set-scroll-classname';
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var EditorViewMixin = Ember.Mixin.create({
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// create a hook for jQuery logic that will run after
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// a view and all child views have been rendered,
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// since didInsertElement runs only when the view's el
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// has rendered, and not necessarily all child views.
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//
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// http://mavilein.github.io/javascript/2013/08/01/Ember-JS-After-Render-Event/
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// http://emberjs.com/api/classes/Ember.run.html#method_next
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scheduleAfterRender: function () {
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Ember.run.scheduleOnce('afterRender', this, this.afterRenderEvent);
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}.on('didInsertElement'),
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// all child views will have rendered when this fires
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afterRenderEvent: function () {
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var $previewViewPort = this.$('.js-entry-preview-content');
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// cache these elements for use in other methods
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this.set('$previewViewPort', $previewViewPort);
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this.set('$previewContent', this.$('.js-rendered-markdown'));
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$previewViewPort.scroll(Ember.run.bind($previewViewPort, setScrollClassName, {
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target: this.$('.js-entry-preview'),
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offset: 10
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}));
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},
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removeScrollHandlers: function () {
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this.get('$previewViewPort').off('scroll');
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}.on('willDestroyElement'),
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// updated when gh-codemirror component scrolls
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markdownScrollInfo: null,
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// percentage of scroll position to set htmlPreview
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scrollPosition: Ember.computed('markdownScrollInfo', function () {
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if (!this.get('markdownScrollInfo')) {
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return 0;
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}
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var scrollInfo = this.get('markdownScrollInfo'),
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markdownHeight,
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previewHeight,
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ratio;
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markdownHeight = scrollInfo.height - scrollInfo.clientHeight;
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previewHeight = this.get('$previewContent').height() - this.get('$previewViewPort').height();
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ratio = previewHeight / markdownHeight;
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return scrollInfo.top * ratio;
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})
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});
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export default EditorViewMixin;
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