Darin Adler 写道: > On Nov 14, 2008, at 12:24 AM, browserwk wrote: > >> Before list, i assume html page have only one <img> and <map>(also one >> <area>) tag, but also they are bounded. >> >> In order to focus navigate via tab, i did follow things. >> 1 to identify <img>,<area> tag >> I can get the <img> or <area> node from >> Document::nextFocusableNode >> Document::previousFocusableNode. >> >> 2 get absolutely position >> Also, i had got the position of the <img> and each <area> node with >> nonstandard way, in any way. >> If i use areaNode->renderer(), i will got NULL. >> I didn't know the reason.If u can, tell me more. >> >> 3 to focus <area> node >> In this step, i fail to focus the <area> node, moreover didn't see the >> focus ring. >> And i found the <area> node never pass through the isKeyboardFocusable() >> function. >> So, some questions >> <1> I want to know the factor that a node need be focusable, just like >> <area> node. >> <2> Can i render the focus ring, when i got the <area> node and it's >> absolutely postion ? > > This doesn't sound like the right approach. To make this work the > approach would not to be write new code to navigate, but rather to > change the existing code so that it will do this when necessary. > > Assuming the page has only one <img>, one <map>, and one <area> seems > completely wrong, and I'm not sure it's helpful to designing a solution. > > The premises behind your questions <1> and <2> are wrong so I really > don't see how I can answer the questions. > > Sorry, I'd love to help, but I'm stuck here. > > -- Darin > > _______________________________________________ > webkit-dev mailing list > [email protected] > http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev > Thanks all reply.
Hi, Darin Adler May be my post confuse you. First, i understand the particular img/area pair, add also read http://www.w3.org/TR/REC-html40/struct/objects.html#h-13.6. The reasion why making such a assuming is that to simplify the problem. In othe words, i have hold the <area> node and it's available in the img. As for the img/area pair, i can solve it. The <area> node can be got from Node::traverseNextNode() function. But now, the area node didn't pass through the Node::isKeyBoardFocusable() function, also not render the focus ring on the <area> node. yes, i want to let the <area> node be added to the FocusController architecture just like other focusable node, such as <a> tag. That's my wish. I hope you understand. thanks again. _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
