DOMCore
Cocoa's DOM (DocumentObjectModel) implementation.
http://developer.apple.com/documentation/Cocoa/Conceptual/DisplayWebContent/index.html
Classes: [Topic]
The DOMDocument, DOMNodeList, DOMNamedNodeMap and DOMNode form the foundation for building HTML object trees. WebFrame's method DOMDocument returns the root node for the frame's NSURLRequest. You can walk through the document tree starting with this node to examine all of the page's leafs.
- (void)walkNodeTree:(DOMNode )parent {
DOMNodeList nodeList = [parent childNodes];
unsigned i, length = [nodeList length];
for (i = 0; i < length; i++) {
DOMNode node = [nodeList item:i];
[self walkNodeTree:node];
DOMNamedNodeMap attributes = [node attributes];
unsigned a, attCount = [attributes length];
NSMutableString nodeInfo = [[[NSMutableString]] stringWithCapacity:0];
NSString nodeName = [node nodeName];
NSString nodeValue = [node nodeValue];
[nodeInfo appendFormat:@"node[%i]:\nname: %@\nvalue: %@\nattributes:\n",
i, nodeName, nodeValue];
for (a = 0; a < attCount; a++) {
DOMNode att = [attributes item:a];
NSString attName = [att nodeName];
NSString attValue = [att nodeValue];
[nodeInfo appendFormat:@"\tatt[%i] name: %@ value: %@\n", a, attName, attValue];
}
NSLog(nodeInfo);
}
}
- (void)webView:(WebView )sender didFinishLoadForFrame:(WebFrame )frame { WebDataSource dataSource = [frame dataSource]; NSArray subresources = [dataSource subresources]; DOMDocument doc = [frame DOMDocument]; [self walkNodeTree:[doc documentElement]]; }
You can edit HTML directly through Apple's DOM implementation by setting the supporting WebView to editable ([webView setEditable:YES];). Apple's documentation is kind of lean right now, so hopefully more can be posted here.
--zootbobbalu
I want to set the values of specific HTML form fields in a web view. It seems like accessing the DOM is the way to do this (I don't see any hooks in the WebView APIs) but I just can't make it work. I started by finding the DOMNode I want to set using the walkNodeTree code above and then tried to manipulate a node using methods from http://developer.apple.com/documentation/Darwin/Reference/ManPages/mann/domNode.n.html.
// inside the for() look in walkNodeTree, find a node with a "value" attribute (in my case, an input type=text)
if( [attName isEqualToString:@"value"] ){
// warning: DOMNode does not respond to setAttribute [node setAttribute:@"value" :@"blah"];// attributeName newValue
// this has no effect, probably b/c it doesn't set an attribute, but the "value" [node setNodeValue:@"blah"];
// this is the approach used in apple's DOMHTMLEditor example, except it still has no effect DOMNode newNode = [parent replaceChild:node:[parent firstChild]];
}
There must be a way to do this, or else how would Safari's "Remember password" feature work?
Thanks, Robert
