嗨，我需要通过将鼠标悬停在某个项目（图像，pdf，html等）上来查看该项目的缩略图预览，这样我就可以轻松查看该项目的内容而不必完全加载它。当我将鼠标悬停1秒钟时，它应该在弹出窗口中显示预览，而当我将鼠标悬停在该项目上时，它应该会消失。如果无法在浏览器窗口中显示预览，则显示诸如“无法显示”之类的消息。
为此，我在下面提供了html代码（图标）的pdf预览：
<div id="ember8734" class="ember-view managed-object-tools-icon managed-object-icon-view container-view clickable" style="font-size: 20px">
<rs-icon id="ember8737" class="ember-view primary-icon managed-object-primary-icon icon" style="font-size: 20px">
<icon glyph="type_pdf" class="type_pdf" set="types" style="font-size: 20px;">
</icon>
</rs-icon>
<rs-icon id="ember8743" class="ember-view version-icon icon" style="width: 1em; height: 1em; font-size: 20px">
</rs-icon>
</div>
<managed-object-label id="ember8749" class="ember-view content-data managed-object-label-view managed-object-label-view managed-object-label data-view managed-object-label-view-core_component_data-view-mixin managed-object-label-core_component_data-view-mixin data-view-core_component_data-view-mixin">
<div core-role="primaryLabel" class="" data-bindattr-49="49">story.pdf</div>
对于所有项目（html，pdf，图像等），缩略图-preview.js代码在此处：
ScalerMixin = {
imageWidth: null,
imageHeight: null,
containerWidth: null,
containerHeight: null,
width: null,
height: null,
top: null,
left: null,
attributeBindings: [ 'style', 'src' ],
style: function () {
if (!this.get('width') || !this.get('height') || isNaN(this.get('top')) || isNaN(this.get('left'))) {
return '';
}
return 'width: ' + this.get('width') + 'px; height: ' + this.get('height') + 'px; margin-top: ' + this.get('top') + 'px; margin-left: ' + this.get('left') + 'px;';
}.property('width', 'height', 'top', 'left'),
captureImageSize: function () {
if (this.isDestroying || this.isDestroyed) { return; }
var i = new window.Image();
i.src = this.get('src');
this.set('imageWidth', i.width);
this.set('imageHeight', i.height);
this.updateSize();
},
updateSize: function () {
if (this.isDestroying || this.isDestroyed) { return; }
if (!this.imageWidth || !this.imageHeight || !this.containerWidth || !this.containerHeight) {
return;
}
var iar = this.imageWidth / this.imageHeight,
car = this.containerWidth / this.containerHeight;
var width, height;
if (car > iar) {
height = this.containerHeight;
width = iar * this.containerHeight;
} else {
height = this.containerWidth / iar;
width = this.containerWidth;
}
if (this.width !== width) {
this.set('width', width);
}
if (this.height !== height) {
this.set('height', height);
}
this.set('top', (this.containerHeight - height) / 2);
this.set('left', (this.containerWidth - width) / 2);
}.observes('imageWidth', 'imageHeight', 'containerWidth', 'containerHeight'),
containerWidthBinding: 'parentView.width',
containerHeightBinding: 'parentView.height',
_attachLoadHandler: function () {
this.get('element').onload = this.captureImageSize.bind(this);
}.on('didInsertElement')
},
ThumbnailImage = Ember.View.extend(ScalerMixin, {
tagName: 'img',
isVisible: function () {
return !!this.get('src');
}.property('src'),
objectBinding: 'parentView.object',
click: function () {
alert('thumb1');
var i = new window.Image(),
src = this.get('object').uri();
i.onload = function () {
Core.openWindow(src, {
width: i.width,
height: i.height
});
};
i.src = src;
},
classNames: [ 'clickable' ]
}),
Thumbnail = ThumbnailImage.extend({
src: function () {
var object = this.get('object');
if (!object) { return; }
var thumb = object.get('keyedVariants.core:thumbnail');
if (thumb) {
return object.uri({ variantName: thumb.variantName });
}
return null;
}.property('object', 'object.keyedVariants.core:thumbnail', 'object.variants.length')
}),
Image = ThumbnailImage.extend({
src: function () {
var object = this.get('object');
if (!object) { return; }
var type = object.get('contentType');
if (/^image\/(?:jpeg|gif|png|svg)/.test(type)) {
return object.uri();
}
return null;
}.property('object')
}),
Playable = Ember.ContainerView.extend({
object: null,
playableSources: function () {
var playerTag = document.createElement(this.get('playerTagName')),
sources = this.get('sources') || [];
return sources.filter(function (source) {
if (!playerTag.canPlayType) { return false; }
return !!playerTag.canPlayType(source.type + ';').replace(/no/, '');
}, this);
}.property('sources.@each.type'),
updateSizes: function () {
var w = Math.min(this.get('parentView.width') | 0),
h = Math.min(this.get('parentView.height') | 0),
s = Math.min(128, Math.min(this.get('parentView.width'), this.get('parentView.height')) * 0.75) | 0,
l = Math.floor((w - s) / 2),
t = Math.floor((h - s) / 2),
m = 'margin: ' + t + 'px 0 0 ' + l + 'px';
this.set('margin', m);
this.set('iconSize', s);
}.on('didInsertElement').observes('parentView.width', 'parentView.height'),
iconSize: 128,
marginLeft: 0,
marginTop: 0,
PlayView: Ember.ContainerView.extend({
tagName: null,
ThumbnailView: ThumbnailImage,
thumbnailView: childView('ThumbnailView'),
objectBinding: 'parentView.object',
attributeBindings: [ 'controls', 'preload', 'style' ],
style: function () {
var w = this.get('parentView.parentView.width'),
h = this.get('parentView.parentView.height');
return "max-width: " + w + "px; max-height: " + h + "px;";
}.property('parentView.parentView.width', 'parentView.parentView.height'),
controls: "true",
preload: 'metadata',
poster: 'thumbnailView.src',
SourceView: Ember.View.extend({
tagName: 'source',
attributeBindings: ['src', 'type'],
src: null,
type: null
}),
PlayButton: Core.view.Icon.extend({
classNames: ['play-button'],
sizeBinding: 'parentView.parentView.iconSize',
marginBinding: 'parentView.parentView.margin',
model: 'play',
click: function () {
alert('thumb2');
var el = this.get('parentView.element');
if (el) {
this.get('parentView.element').play();
}
}
}),
playButton: childView('PlayButton'),
sourceViews: function () {
return this.get('parentView.sources').map(function (source) {
return this.createChildView(this.SourceView, source);
}, this);
}.property(),
setupView: function () {
if (this.isDestroying || this.isDestroyed) { return; }
this.set('tagName', this.get('parentView.playerTagName'));
this.replace(0, this.get('length'), []);
this.get('sourceViews').forEach(function (sourceView) {
this.pushObject(sourceView);
}, this);
this.pushObject(this.get('thumbnailView'));
this.pushObject(this.get('playButton'));
}.on('init').observes('parentView.sources')
}),
playView: childView('PlayView'),
PremediaView: Ember.ContainerView.extend({
ThumbnailView: ThumbnailImage,
thumbnailView: childView('ThumbnailView'),
PlayButton: Core.view.Icon.extend({
classNames: ['play-button'],
sizeBinding: 'parentView.parentView.iconSize',
marginBinding: 'parentView.parentView.margin',
model: 'play',
click: function () {
alert('thumb3');
this.get('parentView.parentView').play();
}
}),
playButton: childView('PlayButton'),
setupView: function () {
this.replace(0, this.get('length'), []);
this.pushObject(this.get('thumbnailView'));
this.pushObject(this.get('playButton'));
}.on('init').observes('thumbnailView.src')
}),
premediaView: childView('PremediaView'),
PlaceholderView: Ember.ContainerView.extend({
ThumbnailView: ThumbnailImage,
thumbnailView: childView('ThumbnailView'),
CantPlayButton: Core.view.Icon.extend({
classNames: ['play-button', 'cant-play'],
sizeBinding: 'parentView.parentView.iconSize',
marginBinding: 'parentView.parentView.margin',
model: 'play_not_available',
titleBinding: 'Core.messageTable.content/icon/preview/cant-play'
}),
cantPlayButton: childView('CantPlayButton'),
setupView: function () {
this.replace(0, this.get('length'), []);
this.pushObject(this.get('thumbnailView'));
this.pushObject(this.get('cantPlayButton'));
}.on('init').observes('thumbnailView.src')
}),
placeholderView: childView('PlaceholderView'),
media: false,
play: function () {
this.set('media', true);
Ember.run.schedule('render', this, function () {
var go = function () {
var el = this.get('playView.element');
if (!el) {
Ember.run.later(this, go);
} else {
$(el).on('canplay', function () {
el.play();
});
}
}.bind(this);
go();
});
},
setupView: function () {
this.replace(0, this.get('length'), []);
if (!this.media) {
this.pushObject(this.get('premediaView'));
} else {
if (this.get('playableSources.length') === 0) {
this.pushObject(this.get('placeholderView'));
} else {
this.pushObject(this.get('playView'));
}
}
}.on('init').observes('playableSources.length', 'media')
});
Core.component.ManagedObjectPreview.MediaPreview = Ember.ContainerView.extend({
classNames: [ 'thumbnail-preview' ],
height: 250,
width: 292,
captureSizeForRealsies: function () {
if (this.isDestroying || this.isDestroyed) { return; }
var el = this.get('element');
if (!el) {
Ember.run.later(this, 'captureSizeForRealsies', 125);
return;
}
var rect = el.getBoundingClientRect();
if (!rect.width || !rect.height) {
Ember.run.later(this, 'captureSizeForRealsies', 125);
return;
}
// Find first scrollable containment
var scrollX = scrollY = el;
while (scrollX && scrollX.nodeType !== Node.DOCUMENT_NODE && $(scrollX).css('overflow-x') !== 'auto') {
scrollX = scrollX.parentNode;
}
while (scrollY && scrollY.nodeType !== Node.DOCUMENT_NODE && $(scrollY).css('overflow-y') !== 'auto') {
scrollY = scrollY.parentNode;
}
if (scrollY) {
rect.height = Math.min(rect.height, scrollY.clientHeight);
}
if (scrollX) {
rect.width = Math.min(rect.width, scrollX.clientWidth);
}
this.beginPropertyChanges();
if (rect.width !== this.width) {
this.set('width', rect.width);
}
if (rect.height !== this.height) {
this.set('height', rect.height);
}
this.endPropertyChanges();
},
captureSize: function () {
Ember.run.later(this, 'captureSizeForRealsies', 125);
}.on('didInsertElement').observes('Core.document.width'),
classNameBindings: [ 'isImage:ui-clickable' ],
objectBinding: 'model.finalManagedObject',
thumb: Ember.computed(function () {
var uri, mo = this.get('object');
if (!mo) { return; }
if (mo.getVariant('core:thumbnail')) {
uri = Core.restUrl(2, 'content/binary/id/' + this.get('object.id') + '?variant=core:thumbnail');
if (mo.get('revision')) {
uri += '&revision=' + mo.get('revision');
}
return uri;
}
return null;
}).property(
'object.variants.@each.variantName',
'object.id',
'object.revision'
),
isImage: function () {
var contentType = this.get('object.contentType'),
isImage = (/^image\/(?:jpeg|gif|png|svg)/).test(contentType);
return isImage;
}.property('object.contentType'),
urlsFor: function (type) {
var obj = this.get('object') || this.get('model');
URL = obj.streamingUri;
var parentId = $('.preview-and-information-view').attr('id');
var childId = $('#' + parentId).find('div').attr('id');
if (obj.contentType == 'application/vnd.openxmlformats-officedocument.presentationml.presentation') {
$('#'+childId).html('<a href="'+URL+'" target=_blank><span style=cursor:pointer><img src=/core-cms/plugin/core-cms-theme/images/core/content-type/24/office-powerpoint.png alt=power-point style=width: 20px; cursor:pointer;></span></a>');
return false;
}
else if(obj.contentType == 'text/plain' || obj.contentType == 'application/vnd.ms-xpsdocument'){
$('#'+childId).html('<a href="'+URL+'" target=_blank><span style=cursor:pointer><img src=/core-cms/plugin/core-cms-theme/images/core/content-type/24/file-generic.png style=width: 20px;cursor:pointer;></span></a>');
return false;
}
else if(obj.contentType == 'application/pdf'){
$('#'+childId).html('<a href="'+URL+'" target=_blank ><span style=cursor:pointer><icon glyph=type_pdf class=type_pdf set=types style=font-size:20px;cursor:pointer;></icon></span></a>');
return false;
}
else if(obj.contentType == 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'){
$('#'+childId).html('<a href="'+URL+'" target=_blank ><span style=cursor:pointer><img src=/core-cms/plugin/core-cms-theme/images/core/content-type/24/office-word.png alt=office-word style=width: 20px;cursor:pointer;></span></a>');
return false;
}
else if(obj.contentType == 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'){
$('#'+childId).html('<a href="'+URL+'" target=_blank ><span style=cursor:pointer><img src=/core-cms/plugin/core-cms-theme/images/core/content-type/24/office-excel.png style=width: 20px;cursor:pointer;></span></a>');
return false;
}
else if(obj.contentType == 'application/x-shockwave-flash'){
$('#'+childId).html('<a href="'+URL+'" target=_blank ><span style=cursor:pointer><icon glyph=type_adobe_flash_ class=type_adobe_flash set=types style=font-size: 20px;cursor:pointer;></icon></span></a>');
return false;
}
else {
$('#'+childId).html('');
}
if (!obj) { return; }
var items = [obj].concat(obj.get('variants') || []);
items = items.map(function (variant) {
var ret = {};
if (Ember.get(variant, 'variantName')) {
ret.src = obj.uri({ variantName: Ember.get(variant, 'variantName') });
} else {
ret.src = obj.uri();
}
ret.type = Ember.get(variant, 'contentType');
return ret;
});
items = items.filter(function (item) {
if (!item.src || !item.type) { return false; }
return item.type.substr(0, type.length + 1) === (type + '/');
});
return items;
},
videoUrls: function () {
return this.urlsFor('video');
}.property('object.contentType', 'object.variants.@each.contentType'),
isVideo: function () {
return !!this.get('videoUrls.length');
}.property('videoUrls.length'),
audioUrls: function () {
return this.urlsFor('audio');
}.property('object.contentType', 'object.variants.@each.contentType'),
isAudio: function () {
return !!this.get('audioUrls.length');
}.property('audioUrls.length'),
objectChanged: function () {
console.log(this);
if (this.get('length')) {
this.replace(0, this.get('length'), []);
}
if (this.get('isVideo')) {
this.pushObject(this.get('videoView'));
} else if (this.get('isAudio')) {
this.pushObject(this.get('audioView'));
} else {
this.pushObject(this.get('imageView'));
}
}.on('init').observes('object', 'media'),
VideoView: Playable.extend({
classNames: [ 'video-preview' ],
playerTagName: 'video',
objectBinding: 'parentView.object',
sourcesBinding: 'parentView.videoUrls'
}),
videoView: childView('VideoView'),
AudioView: Playable.extend({
classNames: [ 'audio-preview' ],
playerTagName: 'audio',
objectBinding: 'parentView.object',
sourcesBinding: 'parentView.audioUrls'
}),
audioView: childView('AudioView'),
ImageView: Image.extend({
classNames: [ 'image-preview' ]
}),
imageView: childView('ImageView'),
ThumbView: Thumbnail.extend({
classNames: [ 'thumbnail-preview' ]
}),
thumbView: childView('ThumbView')
});
Core.component.ManagedObjectPreview.ThumbPreview = Core.component.ManagedObjectPreview.MediaPreview.extend({
objectChanged: function () {
if (this.get('length')) {
this.replace(0, this.get('length'), []);
}
if (this.get('thumb')) {
this.pushObject(this.get('thumbView'));
}
}.on('init').observes('object')
});
var LocalNavigator = Core.component.NavigableSection.Navigator.extend({
objectBinding: 'sectionView.model.finalManagedObject',
tooltipBinding: "Core.messageTable.content/preview/thumbnail",
enabled:function () {
return !!this.get('types.length');
}.property('types', 'types.length')
});
Core.component.ManagedObjectPreview.proto().navigators.pushObjects([
LocalNavigator.extend({
enabled: function () {
return !!this.get('types.length');
}.property('types.length'),
icon: function () {
if (this.get('thumb')) {
return 'thumbnail_missing';
}
var types = this.get('types'),
isAudio = false,
isVideo = false;
types.forEach(function (type) {
if (/^video\//.test(type)) {
isVideo = true;
}
if (/^audio\//.test(type)) {
isAudio = true;
}
if (/^application\//.test(type)) {
isDocument = true;
}
});
if (isVideo) {
return 'types:type_video';
}
if (isAudio) {
return 'types:type_audio';
}
return types.find(function (type) {
return /^image\//.test(type);
}) ? 'types:type_image' : 'thumbnail_missing';
}.property('thumb', 'object'),
thumb: function () {
var obj = this.get('object'),
variants = obj && obj.get('variants'),
types;
if (!variants) { return null; }
return obj && obj.get('keyedVariants.core:thumbnail');
}.property('object.keyedVariants.core:thumbnail'),
types: function () {
var thumb = this.get('thumb');
if (thumb) {
return [ thumb.contentType ];
}
var obj = this.get('object'),
variants = (obj && obj.get('variants')) || [],
types;
if (!obj) { return []; }
types = [ obj.get('contentType') ];
variants.forEach(function (variant) {
if (variant.variantName !== 'core:thumbnail') {
types.push(variant.contentType);
}
});
types = types.filter(function (type) {
return (/^(image|audio|video|application)\//).test(type);
});
return types;
}.property('object', 'object.keyedVariants', 'object.variants.length'),
}).create()
]);
对于在ManagedObjecttool.js中具有代码的相应图标：
ObjectIconView: Ember.ContainerView.extend(childMOMixin, {
classNames: ['managed-object-tools-icon'],
classNameBindings: [ 'clickable' ],
attributeBindings: [ 'style' ],
style: function () {
return 'font-size: ' + this.get('size') + 'px';
}.property('size'),
mouseDown: function () { return false; },
click: function () {
var actionMenuContext = this.get('actionMenuContext'),
element = this.$(),
row = element.parents('tr:first'),
ctl = this.get('controller');
if (ctl && ctl.send) {
ctl.send('contentItemActionMenu', row.length ? row : element, element, actionMenuContext);
}
return false;
},
clickable: function () {
return !!this.get('controller._actions.contentItemActionMenu');
}.property(''),
childViews: [
'PrimaryIcon',
'TypeOverlay',
'VersionStatus',
'DraftStatus'
],
size: 20,
PrimaryIcon: Core.component.ManagedObjectPrimaryIcon.extend(childMOMixin, {
sizeBinding: 'parentView.size',
loadStateBinding: 'parentView.loadState',
suggestedIconsBinding: 'parentView.suggestedIcons'
}),
VersionStatus: Core.view.Icon.extend(childMOMixin, {
sizeBinding: 'parentView.size',
classNames: ['version-icon'],
classNameBindings: [ 'model' ],
model: function () {
if (this.get('isFrozen')) { return 'status_pinned'; }
if (this.get('isOwned')) { return 'status_checked_out'; }
if (this.get('isLocked')) { return 'status_locked'; }
}.property('isFrozen', 'isOwned', 'isLocked')
}),
DraftStatus: Core.view.Icon.extend(childMOMixin, {
sizeBinding: 'parentView.size',
classNames: ['version-icon'],
classNameBindings: [ 'model' ],
model: function () {
if (this.get('hasDraft')) { return 'status_draft'; }
return "$blank";
}.property('hasDraft')
}),
TypeOverlay: Core.view.Icon.extend(childMOMixin, {
sizeBinding: 'parentView.size',
classNames: ['type-icon'],
classNameBindings: [ 'model' ],
model: function () {
var type = this.get('finalObjectType');
if (type === 'canode') {
return 'status_ca_node';
}
if (type === 'mo') {
return 'status_is_xml';
}
//if (type === 'mononxml' && this.get('variants.length') > 0) {
// return 'status_has_variants';
//}
return '$blank';
}.property('parentView.finalMO.objectType', 'finalObjectType')
})
}).named("ManagedObjectIconView")
我尝试使用“ mouseMove”选项。但是图像没有显示。请为此提供建议。我是炭烬新手。如果您需要更多详细信息，请在评论中问我。您的帮助将不胜感激。预先感谢。
答案 0 :(得分：0)
如果图像位于弹出框上：
windowmouseEnter(){
this.$().popover( 'show' );
},
mouseLeave(){
this.$().popover( 'hide' );
}