/// <summary>
///
/// </summary>
/// <param name="src">image source / url</param>
/// <param name="alt">alternate text for image</param>
public void InsertImage(string src, string alt)
{
try
{
using (new UndoUnit(Document, "Insert Image"))
{
// obtain a reference to the body node
HtmlDomNode bodyNode = (HtmlDomNode)Document.body;
HtmlImageElement img = (HtmlImageElement)Document.createElement("IMG");
img.src = src;
img.alt = alt;
// table processing all complete so insert into the DOM
HtmlSelection selection = Document.selection;
HtmlTextRange textRange = SelectionHelper.GetTextRange(Document);
if (textRange != null)
{
textRange.pasteHTML(((HtmlElement)img).outerHTML);//"<img src=\"" + src + "\" alt=\"" + alt + "\">");
}
else
{
HtmlControlRange controlRange = SelectionHelper.GetAllControls(Document);
if (controlRange != null)
{
// overwrite any controls the user has selected
try
{
// clear the selection and insert the table
// only valid if multiple selection is enabled
for (int idx = 1; idx < controlRange.length; idx++)
{
controlRange.remove(idx);
}
controlRange.item(0).outerHTML = ((HtmlElement)img).outerHTML;
// this should work with initial count set to zero
// controlRange.add((HtmlControlElement)table);
}
catch (Exception ex)
{
throw new HtmlEditorException("Cannot Delete all previously Controls selected.", "InsertImage", ex);
}
}
else
{
// insert the table at the end of the HTML
HtmlDomNode imgNode = (HtmlDomNode)img;
bodyNode.appendChild(imgNode);
}
}
}
}
catch (Exception ex)
{
throw new HtmlEditorException("Unable to insert image.", "InsertImage", ex);
}
}
// function to insert a basic table
// will honour the existing table if passed in
private void ProcessTable(HtmlTable table, HtmlTableProperty tableProperties)
{
try
{
using (new UndoUnit(Document, "Table add/modify"))
{
// obtain a reference to the body node and indicate table present
HtmlDomNode bodyNode = (HtmlDomNode)Document.body;
bool tableCreated = false;
MsHtmlWrap.MarkupRange targetMarkupRange = null;
// ensure a table node has been defined to work with
if (table == null)
{
// create the table and indicate it was created
table = (HtmlTable)Document.createElement("TABLE");
tableCreated = true;
//markup range for selecting first cell after table creation
targetMarkupRange = GetMarkupRange();
}
// define the table border, width, cell padding and spacing
table.border = tableProperties.BorderSize;
if (tableProperties.TableWidth > 0)
{
table.width = (tableProperties.TableWidthMeasurement == MeasurementOption.Pixel) ? string.Format("{0}", tableProperties.TableWidth) : string.Format("{0}%", tableProperties.TableWidth);
}
else
{
table.width = string.Empty;
}
if (tableProperties.TableAlignment != HorizontalAlignOption.Default)
{
table.align = tableProperties.TableAlignment.ToString().ToLower();
}
else
{
table.align = string.Empty;
}
table.cellPadding = tableProperties.CellPadding.ToString();
table.cellSpacing = tableProperties.CellSpacing.ToString();
// define the given table caption and alignment
string caption = tableProperties.CaptionText;
HtmlTableCaption tableCaption = table.caption;
if (caption != null && caption != string.Empty)
{
// ensure table caption correctly defined
if (tableCaption == null)
{
tableCaption = table.createCaption();
}
((HtmlElement)tableCaption).innerText = caption;
if (tableProperties.CaptionAlignment != HorizontalAlignOption.Default)
{
tableCaption.align = tableProperties.CaptionAlignment.ToString().ToLower();
}
if (tableProperties.CaptionLocation != VerticalAlignOption.Default)
{
tableCaption.vAlign = tableProperties.CaptionLocation.ToString().ToLower();
}
}
else
{
// if no caption specified remove the existing one
if (tableCaption != null)
{
// prior to deleting the caption the contents must be cleared
((HtmlElement)tableCaption).innerText = null;
table.deleteCaption();
}
}
// determine the number of rows one has to insert
int numberRows, numberCols;
if (tableCreated)
{
numberRows = Math.Max((int)tableProperties.TableRows, 1);
}
else
{
numberRows = Math.Max((int)tableProperties.TableRows, 1) - (int)table.rows.length;
}
// layout the table structure in terms of rows and columns
table.cols = (int)tableProperties.TableColumns;
if (tableCreated)
{
// this section is an optimization based on creating a new table
// the section below works but not as efficiently
numberCols = Math.Max((int)tableProperties.TableColumns, 1);
// insert the appropriate number of rows
HtmlTableRow tableRow;
for (int idxRow = 0; idxRow < numberRows; idxRow++)
{
tableRow = table.insertRow(-1) as HtmlTableRow;
// add the new columns to the end of each row
for (int idxCol = 0; idxCol < numberCols; idxCol++)
{
tableRow.insertCell(-1);
}
}
}
else
{
// if the number of rows is increasing insert the decrepency
if (numberRows > 0)
{
// insert the appropriate number of rows
for (int idxRow = 0; idxRow < numberRows; idxRow++)
{
table.insertRow(-1);
}
}
else
{
// remove the extra rows from the table
for (int idxRow = numberRows; idxRow < 0; idxRow++)
{
table.deleteRow(table.rows.length - 1);
}
}
// have the rows constructed
// now ensure the columns are correctly defined for each row
HtmlElementCollection rows = table.rows;
foreach (HtmlTableRow tableRow in rows)
{
numberCols = Math.Max((int)tableProperties.TableColumns, 1) - (int)tableRow.cells.length;
if (numberCols > 0)
{
// add the new column to the end of each row
for (int idxCol = 0; idxCol < numberCols; idxCol++)
{
tableRow.insertCell(-1);
}
}
else
{
// reduce the number of cells in the given row
// remove the extra rows from the table
for (int idxCol = numberCols; idxCol < 0; idxCol++)
{
tableRow.deleteCell(tableRow.cells.length - 1);
}
}
}
}
// if the table was created then it requires insertion into the DOM
// otherwise property changes are sufficient
if (tableCreated)
{
// table processing all complete so insert into the DOM
HtmlDomNode tableNode = (HtmlDomNode)table;
HtmlElement tableElement = (HtmlElement)table;
HtmlSelection selection = Document.selection;
HtmlTextRange textRange = SelectionHelper.GetTextRange(Document);
// final insert dependant on what user has selected
if (textRange != null)
{
// text range selected so overwrite with a table
try
{
string selectedText = textRange.text;
if (selectedText != null)
{
// place selected text into first cell
HtmlTableRow tableRow = table.rows.item(0, null) as HtmlTableRow;
(tableRow.cells.item(0, null) as HtmlElement).innerText = selectedText;
}
textRange.pasteHTML(tableElement.outerHTML);
}
catch (Exception ex)
{
throw new HtmlEditorException("Invalid Text selection for the Insertion of a Table.", "ProcessTable", ex);
}
}
else
{
HtmlControlRange controlRange = SelectionHelper.GetAllControls(Document);
if (controlRange != null)
{
// overwrite any controls the user has selected
try
{
// clear the selection and insert the table
// only valid if multiple selection is enabled
for (int idx = 1; idx < controlRange.length; idx++)
{
controlRange.remove(idx);
}
controlRange.item(0).outerHTML = tableElement.outerHTML;
// this should work with initial count set to zero
// controlRange.add((HtmlControlElement)table);
}
catch (Exception ex)
{
throw new HtmlEditorException("Cannot Delete all previously Controls selected.", "ProcessTable", ex);
}
}
else
{
// insert the table at the end of the HTML
bodyNode.appendChild(tableNode);
}
}
}
else
{
// table has been correctly defined as being the first selected item
// need to remove other selected items
HtmlControlRange controlRange = SelectionHelper.GetAllControls(Document);
if (controlRange != null)
{
// clear the controls selected other than than the first table
// only valid if multiple selection is enabled
for (int idx = 1; idx < controlRange.length; idx++)
{
controlRange.remove(idx);
}
}
}
//if table created, then focus the first cell
if (tableCreated)
{
try
{
HtmlElement cell = targetMarkupRange.GetFirstElement(e => e is HtmlTableCell, true);
if (cell != null)
{
SelectCell(cell as HtmlTableCell);
}
}
catch (Exception e)
{
Log.Write(e);
}
}
}
}
catch (Exception ex)
{
// throw an exception indicating table structure change error
throw new HtmlEditorException("Unable to modify Html Table properties.", "ProcessTable", ex);
}
} //ProcessTable