/// <summary>
/// Inserts foster parented characters.
/// </summary>
///
/// <param name="text">
/// The text.
/// </param>
/// <param name="table">
/// The table.
/// </param>
/// <param name="stackParent">
/// The stack parent.
/// </param>
override protected void InsertFosterParentedCharacters(string text, DomObject table, DomObject stackParent)
{
IDomObject parent = table.ParentNode;
if (parent != null)
{
// always an element if not null
IDomObject previousSibling = table.PreviousSibling;
if (previousSibling != null &&
previousSibling.NodeType == NodeType.TEXT_NODE)
{
IDomText lastAsText = (IDomText)previousSibling;
lastAsText.NodeValue += text;
return;
}
parent.InsertBefore(Document.CreateTextNode(text), table);
return;
}
// fall through
IDomText lastChild = stackParent.LastChild as IDomText;
if (lastChild != null)
{
lastChild.NodeValue += text;
return;
}
else
{
stackParent.AppendChildUnsafe(Document.CreateTextNode(text));
}
}
/// <summary>
/// Appends text a node.
/// </summary>
///
/// <param name="parent">
/// The parent.
/// </param>
/// <param name="text">
/// The text.
/// </param>
override protected void AppendCharacters(DomObject parent, string text)
{
IDomText lastChild = parent.LastChild as IDomText;
if (lastChild != null)
{
lastChild.NodeValue += text;
}
else
{
lastChild = Document.CreateTextNode(text);
parent.AppendChildUnsafe(lastChild);
}
}
/// <summary>
/// Sets a child text for this element, using the text node type appropriate for this element's type
/// </summary>
///
/// <param name="el">
/// The element to add text to
/// </param>
/// <param name="text">
/// The text.
/// </param>
private void SetChildText(IDomElement el, string text)
{
if (el.ChildrenAllowed)
{
el.ChildNodes.Clear();
// Element types that cannot have HTML contents should not have the value encoded.
// use DomInnerText node for those node types to preserve the raw text value
IDomText textEl = el.InnerHtmlAllowed ?
new DomText(text) :
new DomInnerText(text);
el.ChildNodes.Add(textEl);
}
}
void editDom(IDomDocument domDocument)
{
//increment the serialized range location start only once
//to account for extra whitespace we add before the first block
m_start.increment();
foreach (List <IDomNode> elements in m_selected)
{
//insert a whitespace, instead of the 'carriage return' which used to separate the blocks
IDomText whitespace = domDocument.createTextNode(" ");
m_previous.insert(whitespace);
//increment the serialized range location end multiple times
//to account for extra whitespace we just added
m_end.increment();
IDomNode parent = elements[0].parentNode;
//insert each element
foreach (IDomNode element in elements)
{
//remove from current parent before inerting into new parent
parent.removeChild(element);
//insert into new parent
m_previous.insert(element);
}
if (parent.childNodes.count == 0)
{
//this block is now empty (all its children removed)
//so remove it from the document
IDomNode grandparent = parent.parentNode;
while (grandparent.childNodes.count == 1)
{
parent = grandparent;
grandparent = grandparent.parentNode;
}
grandparent.removeChild(parent);
}
}
}
/// <summary>
/// Adds the contents to 'node' to the StringBuilder.
/// </summary>
///
/// <param name="sb">
/// The StringBuilder.
/// </param>
/// <param name="node">
/// The node.
/// </param>
/// <param name="skipWhitespace">
/// true to skip any leading whitespace for this node.
/// </param>
protected void AddContents(StringBuilder sb, IDomObject node, bool skipWhitespace)
{
// always skip the opening whitespace of a new child block
if (node.HasChildren)
{
foreach (IDomObject el in node.ChildNodes)
{
if (el.NodeType == NodeType.TEXT_NODE)
{
IDomText txtNode = (IDomText)el;
stringInfo.Target = el.NodeValue;
if (stringInfo.Whitespace)
{
if (!skipWhitespace)
{
sb.Append(" ");
skipWhitespace = true;
}
}
else
{
string val = CleanFragment(el.Render());
if (skipWhitespace)
{
val = val.TrimStart();
skipWhitespace = false;
}
sb.Append(val);
}
}
else if (el.NodeType == NodeType.ELEMENT_NODE)
{
IDomElement elNode = (IDomElement)el;
// first add any inner contents
if (el.NodeName != "HEAD" && el.NodeName != "STYLE" && el.NodeName != "SCRIPT")
{
switch (elNode.NodeName)
{
case "BR":
sb.Append(System.Environment.NewLine);
break;
case "PRE":
RemoveTrailingWhitespace(sb);
sb.Append(System.Environment.NewLine);
sb.Append(ToStandardLineEndings(el.TextContent));
RemoveTrailingWhitespace(sb);
sb.Append(System.Environment.NewLine);
skipWhitespace = true;
break;
case "A":
sb.Append(el.TextContent + " (" + el["href"] + ")");
break;
default:
if (elNode.IsBlock && sb.Length > 0)
{
RemoveTrailingWhitespace(sb);
sb.Append(System.Environment.NewLine);
}
AddContents(sb, el, elNode.IsBlock);
RemoveTrailingWhitespace(sb);
if (elNode.IsBlock)
{
sb.Append(System.Environment.NewLine);
skipWhitespace = true;
}
break;
}
}
}
}
}
}
protected void AddContents(StringBuilder sb, IDomObject startEl)
{
if (startEl.HasChildren)
{
foreach (IDomObject el in startEl.ChildNodes)
{
if (el.NodeType == NodeType.TEXT_NODE)
{
IDomText txtNode = (IDomText)el;
stringInfo.Target = el.NodeValue;
if (!stringInfo.Whitespace)
{
string val = txtNode.NodeValue;
if (skipWhitespace)
{
val = CleanFragment(val);
}
// always add if there's actually content
endingBlock = false;
skipWhitespace = false;
sb.Append(val);
}
else
{
// just whitespace
if (!skipWhitespace)
{
// if not an ending block convert all whitespace to a single space, and
// act like it was an ending block (preventing further whitespace from being added)
sb.Append(" ");
skipWhitespace = true;
}
}
}
else if (el.NodeType == NodeType.ELEMENT_NODE)
{
IDomElement elNode = (IDomElement)el;
// first add any inner contents
if (el.NodeName != "HEAD" && el.NodeName != "STYLE" && el.NodeName != "SCRIPT")
{
AddContents(sb, el);
switch (elNode.NodeName)
{
case "BR":
sb.Append(System.Environment.NewLine);
skipWhitespace = true;
break;
case "PRE":
sb.Append(el.Render());
break;
case "A":
sb.Append(el.Cq().Children().RenderSelection() + " (" + el["href"] + ")");
break;
default:
if (elNode.IsBlock)
{
if (!endingBlock)
{
// erase ending whitespace -- scan backwards until non-whitespace
int i = sb.Length - 1;
int count = 0;
while (i >= 0 && CharacterData.IsType(sb[i], CharacterType.Whitespace))
{
i--;
count++;
}
if (i < sb.Length - 1)
{
sb.Remove(i + 1, count);
}
endingBlock = true;
skipWhitespace = true;
sb.Append(System.Environment.NewLine + System.Environment.NewLine);
}
}
break;
}
}
}
}
}
}
void onInsertHyperlink()
{
//get the document fragment which the user has currently selected using mouse and/or cursor
IWindowSelection windowSelection = modelEdit.windowSelection;
//verify that there's only one selection
if (windowSelection.rangeCount != 1)
{
//this can happen when the user has selected several cell in a table,
//in which case each cell is a separate selection/range
MessageBox.Show("Can't insert a hyperlink when more than one range in the document is selected");
return;
}
using (IDomRange domRange = windowSelection.getRangeAt(0))
{
//verify that only one node is selected
if (!domRange.startContainer.isSameNode(domRange.endContainer))
{
//this can happen for example when the selection spans multiple paragraphs
MessageBox.Show("Can't insert a hyperlink when more than one node in the document is selected");
return;
}
IDomNode container = domRange.startContainer; //already just checked that this is the same as domRange.endContainer
//read existing values from the current selection
string url;
string visibleText;
IDomElement existingHyperlink;
switch (container.nodeType)
{
case DomNodeType.Text:
//selection is a text fragment
visibleText = container.nodeValue.Substring(domRange.startOffset, domRange.endOffset - domRange.startOffset);
IDomNode parentNode = container.parentNode;
if ((parentNode.nodeType == DomNodeType.Element) && (parentNode.nodeName == "a"))
{
//parent of this text node is a <a> element
existingHyperlink = parentNode as IDomElement;
url = existingHyperlink.getAttribute("href");
visibleText = container.nodeValue;
if ((existingHyperlink.childNodes.count != 1) || (existingHyperlink.childNodes.itemAt(0).nodeType != DomNodeType.Text))
{
//this can happen when an anchor tag wraps more than just a single, simple text node
//for example when it contains inline elements like <strong>
MessageBox.Show("Can't edit a complex hyperlink");
return;
}
}
else
{
existingHyperlink = null;
url = null;
}
break;
default:
//unexpected
MessageBox.Show("Can't insert a hyperlink when more than one node in the document is selected");
return;
}
//display the modal dialog box
using (FormInsertHyperlink formInsertHyperlink = new FormInsertHyperlink())
{
formInsertHyperlink.url = url;
formInsertHyperlink.visibleText = visibleText;
DialogResult dialogResult = formInsertHyperlink.ShowDialog();
if (dialogResult != DialogResult.OK)
{
//user cancelled
return;
}
//get new values from the dialog box
//the FormInsertHyperlink.onEditTextChanged method assures that both strings are non-empty
url = formInsertHyperlink.url;
visibleText = formInsertHyperlink.visibleText;
}
//need to change href, change text, and possibly delete existing text;
//do this within the scope of a single IEditorTransaction instance so
//that if the user does 'undo' then it will undo all these operations at once, instead of one at a time
using (IEditorTransaction editorTransaction = modelEdit.createEditorTransaction())
{
if (existingHyperlink != null)
{
//changing an existing hyperlink ...
//... change the href attribute value
existingHyperlink.setAttribute("href", url);
//... change the text, by removing the old text node and inserting a new text node
IDomText newDomText = modelEdit.domDocument.createTextNode(visibleText);
IDomNode oldDomText = existingHyperlink.childNodes.itemAt(0);
existingHyperlink.removeChild(oldDomText);
existingHyperlink.insertBefore(newDomText, null);
}
else
{
//creating a new hyperlink
IDomElement newHyperlink = modelEdit.domDocument.createElement("a");
IDomText newDomText = modelEdit.domDocument.createTextNode(visibleText);
newHyperlink.insertBefore(newDomText, null);
newHyperlink.setAttribute("href", url);
//remove whatever was previously selected, if anything
if (!domRange.collapsed)
{
domRange.deleteContents();
}
//insert the new hyperlink
domRange.insertNode(newHyperlink);
}
}
}
}
