private List <IPage> UpdateItems(IEnumerable <IPage> pages)
{
OnPaneContentsChanging(pages.Any());
var result = new List <IPage>();
var firstRealPage = pages.FirstOrDefault(p => p.Book != null);
if (firstRealPage == null)
{
_browser.Navigate(@"about:blank", false); // no pages, we just want a blank screen, if anything.
return(result);
}
var frame = BloomFileLocator.GetBrowserFile(false, "bookEdit", "pageThumbnailList", "pageThumbnailList.html");
var backColor = ColorToHtmlCode(BackColor);
var htmlText = RobustFile.ReadAllText(frame, Encoding.UTF8).Replace("DarkGray", backColor);
_usingTwoColumns = RoomForTwoColumns;
if (!RoomForTwoColumns)
{
htmlText = htmlText.Replace("columns: 4", "columns: 2").Replace("<div class=\"gridItem placeholder\" id=\"placeholder\"></div>", "");
}
var dom = new HtmlDom(XmlHtmlConverter.GetXmlDomFromHtml(htmlText));
dom = firstRealPage.Book.GetHtmlDomReadyToAddPages(dom);
var pageDoc = dom.RawDom;
// BL-987: Add styles to optimize performance on Linux
if (SIL.PlatformUtilities.Platform.IsLinux)
{
var style = pageDoc.CreateElement("style");
style.InnerXml = "img { image-rendering: optimizeSpeed; image-rendering: -moz-crisp-edges; image-rendering: crisp-edges; }";
pageDoc.GetElementsByTagName("head")[0].AppendChild(style);
}
var body = pageDoc.GetElementsByTagName("body")[0];
var gridlyParent = body.SelectSingleNode("//*[@id='pageGrid']");
int pageNumber = 0;
_pageMap.Clear();
foreach (var page in pages)
{
var pageElement = page.GetDivNodeForThisPage();
if (pageElement == null)
{
continue; // or crash? How can this happen?
}
result.Add(page);
XmlElement pageElementForThumbnail = null;
var pageClasses = pageElement.GetStringAttribute("class").Split(new[] { ' ' });
var cssClass = pageClasses.FirstOrDefault(c => c.ToLowerInvariant().EndsWith("portrait") || c.ToLower().EndsWith("landscape"));
if (!TroubleShooterDialog.MakeEmptyPageThumbnails)
{
pageElementForThumbnail = pageDoc.ImportNode(pageElement, true) as XmlElement;
// BL-1112: Reduce size of images in page thumbnails.
// We are setting the src to empty so that we can use JavaScript to request the thumbnails
// in a controlled manner that should reduce the likelihood of not receiving the image quickly
// enough and displaying the alt text rather than the image.
DelayAllImageNodes(pageElementForThumbnail);
}
else
{
// Just make a minimal placeholder to get the white border.
pageElementForThumbnail = pageDoc.CreateElement("div");
var pageClass = "bloom-page";
// The page needs to have one of the classes like A4Portrait or it will have zero size and vanish.
if (!string.IsNullOrEmpty(cssClass))
{
pageClass += " " + cssClass;
}
pageElementForThumbnail.SetAttribute("class", pageClass);
}
var cellDiv = pageDoc.CreateElement("div");
cellDiv.SetAttribute("class", ClassForGridItem);
var gridId = GridId(page);
cellDiv.SetAttribute("id", gridId);
_pageMap.Add(gridId, page);
gridlyParent.AppendChild(cellDiv);
//we wrap our incredible-shrinking page in a plain 'ol div so that we
//have something to give a border to when this page is selected
var pageContainer = pageDoc.CreateElement("div");
pageContainer.SetAttribute("class", PageContainerClass);
pageContainer.AppendChild(pageElementForThumbnail);
// We need an invisible div covering our pageContainer, so that the user can't actually click
// on the underlying "incredible-shrinking page".
var invisibleCover = pageDoc.CreateElement("div");
invisibleCover.SetAttribute("class", InvisbleThumbClass);
pageContainer.AppendChild(invisibleCover);
// And here it gets fragile(for not).
// The nature of how we're doing the thumbnails (relying on scaling) seems to mess up
// the browser's normal ability to assign a width to the parent div. So our parent
// here, .pageContainer, doesn't grow with the size of its child. Sigh. So for the
// moment, we assign appropriate sizes, by hand.We rely on c# code to add these
// classes, since we can't write a rule in css3 that peeks into a child attribute.
if (!string.IsNullOrEmpty(cssClass))
{
pageContainer.SetAttribute("class", "pageContainer " + cssClass);
}
cellDiv.AppendChild(pageContainer);
var captionDiv = pageDoc.CreateElement("div");
captionDiv.SetAttribute("class", "thumbnailCaption");
cellDiv.AppendChild(captionDiv);
string captionI18nId;
var captionOrPageNumber = page.GetCaptionOrPageNumber(ref pageNumber, out captionI18nId);
if (!string.IsNullOrEmpty(captionOrPageNumber))
{
captionDiv.InnerText = I18NHandler.GetTranslationDefaultMayNotBeEnglish(captionI18nId, captionOrPageNumber);
}
}
// set interval based on physical RAM
var intervalAttrib = pageDoc.CreateAttribute("data-thumbnail-interval");
intervalAttrib.Value = _thumbnailInterval;
body.Attributes.Append(intervalAttrib);
_browser.WebBrowser.DocumentCompleted += WebBrowser_DocumentCompleted;
// Save the scroll position of the thumbnail list to restore in WebBrowser_DocumentCompleted.
// Note that the position we want is NOT _browser.VerticalScrollDistance (as in previous code),
// since the actual list of pages is no longer the whole content of this browser; the
// page controls are at the bottom and don't scroll. So we need the scroll position of
// the element that overflows and scrolls.
// it's awkward that we have to convert to a string and back, but the current version of
// RunJavaScript does not support returning anything but strings.
// (The TryParse is probably not necessary...in an early version of this code I was getting
// nulls back sometimes, it may no longer be possible.)
int.TryParse(_browser.RunJavaScript("(document.getElementById('pageGridWrapper')) ? document.getElementById('pageGridWrapper').scrollTop.toString() : '0'"), out _verticalScrollDistance);
_baseForRelativePaths = dom.BaseForRelativePaths;
_browser.Navigate(dom, source: "pagelist");
return(result);
}
private List <IPage> UpdateItems(IEnumerable <IPage> pages)
{
RemoveThumbnailListeners();
var result = new List <IPage>();
var firstRealPage = pages.FirstOrDefault(p => p.Book != null);
if (firstRealPage == null)
{
_browser.Navigate(@"about:blank", false); // no pages, we just want a blank screen, if anything.
return(result);
}
var frame = BloomFileLocator.GetBrowserFile("bookEdit", "pageThumbnailList", "pageThumbnailList.html");
var backColor = ColorToHtmlCode(BackColor);
var htmlText = RobustFile.ReadAllText(frame, Encoding.UTF8).Replace("DarkGray", backColor);
_usingTwoColumns = RoomForTwoColumns;
if (!RoomForTwoColumns)
{
htmlText = htmlText.Replace("columns: 4", "columns: 2").Replace("<div class=\"gridItem placeholder\" id=\"placeholder\"></div>", "");
}
var dom = new HtmlDom(XmlHtmlConverter.GetXmlDomFromHtml(htmlText));
dom = firstRealPage.Book.GetHtmlDomReadyToAddPages(dom);
var pageDoc = dom.RawDom;
// BL-987: Add styles to optimize performance on Linux
if (SIL.PlatformUtilities.Platform.IsLinux)
{
var style = pageDoc.CreateElement("style");
style.InnerXml = "img { image-rendering: optimizeSpeed; image-rendering: -moz-crisp-edges; image-rendering: crisp-edges; }";
pageDoc.GetElementsByTagName("head")[0].AppendChild(style);
}
var body = pageDoc.GetElementsByTagName("body")[0];
var gridlyParent = body.SelectSingleNode("//*[@id='pageGrid']");
int pageNumber = 0;
_pageMap.Clear();
foreach (var page in pages)
{
var pageElement = page.GetDivNodeForThisPage();
if (pageElement == null)
{
continue; // or crash? How can this happen?
}
result.Add(page);
var pageElementForThumbnail = pageDoc.ImportNode(pageElement, true) as XmlElement;
// BL-1112: Reduce size of images in page thumbnails.
// We are setting the src to empty so that we can use JavaScript to request the thumbnails
// in a controlled manner that should reduce the likelihood of not receiving the image quickly
// enough and displaying the alt text rather than the image.
DelayAllImageNodes(pageElementForThumbnail);
var cellDiv = pageDoc.CreateElement("div");
cellDiv.SetAttribute("class", ClassForGridItem);
var gridId = GridId(page);
cellDiv.SetAttribute("id", gridId);
_pageMap.Add(gridId, page);
gridlyParent.AppendChild(cellDiv);
//we wrap our incredible-shrinking page in a plain 'ol div so that we
//have something to give a border to when this page is selected
var pageContainer = pageDoc.CreateElement("div");
pageContainer.SetAttribute("class", PageContainerClass);
pageContainer.AppendChild(pageElementForThumbnail);
/* And here it gets fragile (for not).
* The nature of how we're doing the thumbnails (relying on scaling) seems to mess up
* the browser's normal ability to assign a width to the parent div. So our parent
* here, .pageContainer, doesn't grow with the size of its child. Sigh. So for the
* moment, we assign appropriate sizes, by hand. We rely on c# code to add these
* classes, since we can't write a rule in css3 that peeks into a child attribute.
*/
var pageClasses = pageElementForThumbnail.GetStringAttribute("class").Split(new[] { ' ' });
var cssClass = pageClasses.FirstOrDefault(c => c.ToLowerInvariant().EndsWith("portrait") || c.ToLower().EndsWith("landscape"));
if (!string.IsNullOrEmpty(cssClass))
{
pageContainer.SetAttribute("class", "pageContainer " + cssClass);
}
cellDiv.AppendChild(pageContainer);
var captionDiv = pageDoc.CreateElement("div");
captionDiv.SetAttribute("class", "thumbnailCaption");
cellDiv.AppendChild(captionDiv);
string captionI18nId;
var captionOrPageNumber = page.GetCaptionOrPageNumber(ref pageNumber, out captionI18nId);
if (!string.IsNullOrEmpty(captionOrPageNumber))
{
captionDiv.InnerText = I18NHandler.GetTranslationDefaultMayNotBeEnglish(captionI18nId, captionOrPageNumber);
}
}
// set interval based on physical RAM
var intervalAttrib = pageDoc.CreateAttribute("data-thumbnail-interval");
intervalAttrib.Value = _thumbnailInterval;
body.Attributes.Append(intervalAttrib);
_browser.WebBrowser.DocumentCompleted += WebBrowser_DocumentCompleted;
_verticalScrollDistance = _browser.VerticalScrollDistance;
_baseForRelativePaths = dom.BaseForRelativePaths;
_browser.Navigate(dom);
return(result);
}
private List <IPage> UpdateItems(IEnumerable <IPage> pages)
{
var result = new List <IPage>();
var frame = BloomFileLocator.GetFileDistributedWithApplication("BloomBrowserUI", "bookEdit", "BookPagesThumbnailList", "BookPagesThumbnailList.htm");
var backColor = ColorToHtmlCode(BackColor);
var htmlText = System.IO.File.ReadAllText(frame, Encoding.UTF8).Replace("DarkGray", backColor);
_usingTwoColumns = RoomForTwoColumns;
if (!RoomForTwoColumns)
{
htmlText = htmlText.Replace("columns: 4", "columns: 2").Replace("<div class=\"gridItem placeholder\" id=\"placeholder\"></div>", "");
}
var dom = new HtmlDom(htmlText);
var firstRealPage = pages.FirstOrDefault(p => p.Book != null);
if (firstRealPage == null)
{
_browser.Navigate(@"about:blank", false); // no pages, we just want a blank screen, if anything.
return(result);
}
dom = firstRealPage.Book.GetHtmlDomReadyToAddPages(dom);
var pageDoc = dom.RawDom;
var body = pageDoc.GetElementsByTagName("body")[0];
var gridlyParent = body.FirstChild; // too simplistic?
int pageNumber = 0;
_pageMap.Clear();
foreach (var page in pages)
{
var node = page.GetDivNodeForThisPage();
if (node == null)
{
continue; // or crash? How can this happen?
}
result.Add(page);
var pageThumbnail = pageDoc.ImportNode(node, true);
var cellDiv = pageDoc.CreateElement("div");
cellDiv.SetAttribute("class", "gridItem");
var gridId = GridId(page);
cellDiv.SetAttribute("id", gridId);
_pageMap[gridId] = page;
gridlyParent.AppendChild(cellDiv);
//we wrap our incredible-shrinking page in a plain 'ol div so that we
//have something to give a border to when this page is selected
var pageContainer = pageDoc.CreateElement("div");
pageContainer.SetAttribute("class", "pageContainer");
pageContainer.AppendChild(pageThumbnail);
/* And here it gets fragile (for not).
* The nature of how we're doing the thumbnails (relying on scaling) seems to mess up
* the browser's normal ability to assign a width to the parent div. So our parent
* here, .pageContainer, doesn't grow with the size of its child. Sigh. So for the
* moment, we assign appropriate sizes, by hand. We rely on c# code to add these
* classes, since we can't write a rule in css3 that peeks into a child attribute.
*/
var pageClasses = pageThumbnail.GetStringAttribute("class");
//enhance: there is doubtless code somewhere else that picks these size/orientations out elegantly
if (pageClasses.ToLower().Contains("a5portrait"))
{
pageContainer.SetAttribute("class", "pageContainer A5Portrait");
}
if (pageClasses.ToLower().Contains("a4portrait"))
{
pageContainer.SetAttribute("class", "pageContainer A4Portrait");
}
if (pageClasses.ToLower().Contains("a4landscape"))
{
pageContainer.SetAttribute("class", "pageContainer A4Landscape");
}
cellDiv.AppendChild(pageContainer);
var captionDiv = pageDoc.CreateElement("div");
captionDiv.SetAttribute("class", "thumbnailCaption");
cellDiv.AppendChild(captionDiv);
var captionOrPageNumber = page.GetCaptionOrPageNumber(ref pageNumber);
captionDiv.InnerText = LocalizationManager.GetDynamicString("Bloom", "EditTab.ThumbnailCaptions." + captionOrPageNumber, captionOrPageNumber);
}
_browser.WebBrowser.DocumentCompleted += WebBrowser_DocumentCompleted;
_verticalScrollDistance = _browser.VerticalScrollDistance;
_browser.Navigate(pageDoc, null);
return(result);
}
