I am doing a simple QueryInterface() to get the IHTMLElement2 interface, but it always fails with E_NOINTERFACE.
UPDATE: I need to get the IHTMLElement2 interface of the body element because it has a focus() method so I can set focus to the body. It can't be done with the IHTMLElement interface.
Any ideas why this errors (or how to reach body->focus())?
WebBrowser1->Navigate(L"c:\\test.htm");
while (WebBrowser1->Busy) Application->ProcessMessages();
DelphiInterface<IHTMLDocument2> diDoc = WebBrowser1->Document;
if (diDoc) {
DelphiInterface<IHTMLElement2> diBodyElement;
// all good until this point
if (SUCCEEDED(diDoc->QueryInterface(IID_IHTMLElement2, reinterpret_cast<void**>(&diBodyElement))) && diBodyElement) {
// Never reaches this part - always E_NOINTERFACE when querying for IID_IHTMLElement2
diBodyElement->focus();
}
}
I've reached my own solution how to reach body->focus() which follows:
DelphiInterface <IHTMLDocument2> diDoc2 = WebBrowser1->Document;
if (diDoc2) {
DelphiInterface<IHTMLElement> pBody1;
DelphiInterface<IHTMLElement2> pBody2;
DelphiInterface<IHTMLBodyElement> pBodyElem;
if (SUCCEEDED(diDoc2->get_body(&pBody1)) && pBody1) {
if (SUCCEEDED(pBody1->QueryInterface(IID_IHTMLBodyElement, reinterpret_cast<void**>(&pBodyElem))) && pBodyElem) {
if (SUCCEEDED(pBodyElem->QueryInterface(IID_IHTMLElement2, reinterpret_cast<void**>(&pBody2))) && pBody2) {
pBody2->focus();
}
}
}
}
EDIT (suggested by Reby Lebeau) - simplified version:
DelphiInterface <IHTMLDocument2> diDoc2 = WebBrowser1->Document;
if (diDoc2) {
DelphiInterface<IHTMLElement> pBody1;
DelphiInterface<IHTMLElement2> pBody2;
if (SUCCEEDED(diDoc2->get_body(&pBody1)) && pBody1) {
if (SUCCEEDED(pBody1->QueryInterface(IID_IHTMLElement2, reinterpret_cast<void**>(&pBody2))) && pBody2) {
// focus to <body> element
pBody2->focus();
}
}
}
Related
I'm a fairly new student in AP CSP, and I wanted to create a username/password system in code.org's App Lab, however, it requires me to get the readRecords() command to function first.
I have the code as such :
function read (array) {
var truth;
readRecords("loginarray", {}, function(records) {
if (records.length > 0) {
for (var i = 0; i < records.length; i++){
if (array.user == records[i].user){
if (array.pass == records[i].pass) {
truth = false;
hideElement("unverifiedtext");
hideElement("retrybutton");
setScreen("verifyscreen");
}
}
}
}
}
);
return truth;
}
But nothing I do seems to get the readRecords() command working. I'm rather confused, can this asynchronous timing be meddled with at all? If not, how should I go about fixing this issue?
Thanks in advance!
I am looking to use two conditions together to handle a display. If both a and b are true, then show something.
In JavaScript, we would write: if (a && b) { ... }
Moustache
{{#(one && two)}} // or #one && #two
<p>foobar</p>
{{/(one && two)}}
JSON
{
"one": "OK",
"two": "Yes"
}
Remember that
if (a && b) {
}
is the same as
if (a) {
if (b) {
}
}
So you can write you Mustach template like this:
Moustache
{{#one}}
{{#two}}
<p>foobar</p>
{{/two}}
{{/one}}
I am trying to package multiple drl files each one has multiple rules extending same parent rule BaseRule.
Getting NullPointerException while calling
kbuilder.add(ResourceFactory.newFileResource(file), ResourceType.DRL);
Looks like the logic used below is not correct in KnowledgeBuilderImpl - sortRulesByDependency()
for (RuleDescr ruleDescr : packageDescr.getRules()) {
if (ruleDescr.isQuery()) {
queries.add(ruleDescr);
} else if (!ruleDescr.hasParent()) {
roots.add(ruleDescr);
} else {
if (pkg.getRule(ruleDescr.getParentName()) != null) {
// The parent of this rule has been already compiled
compiledRules.add(ruleDescr.getParentName());
}
List<RuleDescr> childz = children.get(ruleDescr.getParentName());
if (childz == null) {
childz = new ArrayList<RuleDescr>();
children.put(ruleDescr.getParentName(), childz);
}
childz.add(ruleDescr);
}
}
for (String compiledRule : compiledRules) {
List<RuleDescr> childz = children.remove( compiledRule );
roots.addAll( childz );
}
compiledRules list contains BaseRule name multiple times because more than one rule extending BaseRule.
After first time remove, next time it is going to return NULL and that will cause NullPointerException in roots.addAll
Any idea why there is no check to avoid this case?
I am trying to find a specific element from my page using ExtJS 4 so I can do modifications on it.
I know its id so it should not be a problem BUT
-I tried Ext.getCmp('theId') and it just return me undefined
-I tried to use down('theId') method by passing through the view and I still get a nullresponse.
As I know the id of the element I tried again the two methods by setting manually the id and it didn't work neither.
Do these two methods not function?
How should I do?
Here is the concerned part of the code :
listeners: {
load: function(node, records, successful, eOpts) {
var ownertree = records.store.ownerTree;
var boundView = ownertree.dockedItems.items[1].view.id;
var generalId = boundView+'-record-';
// Add row stripping on leaf nodes when a node is expanded
//
// Adding the same feature to the whole tree instead of leaf nodes
// would not be much more complicated but it would require iterating
// the whole tree starting with the root node to build a list of
// all visible nodes. The same function would need to be called
// on expand, collapse, append, insert, remove and load events.
if (!node.tree.root.data.leaf) {
// Process each child node
node.tree.root.cascadeBy(function(currentChild) {
// Process only leaf
if (currentChild.data.leaf) {
var nodeId = ""+generalId+currentChild.internalId;
var index = currentChild.data.index;
if ((index % 2) == 0) {
// even node
currentChild.data.cls.replace('tree-odd-node', '')
currentChild.data.cls = 'tree-even-node';
} else {
// odd node
currentChild.data.cls.replace('tree-even-node', '')
currentChild.data.cls = 'tree-odd-node';
}
// Update CSS classes
currentChild.triggerUIUpdate();
console.log(nodeId);
console.log(ownertree.view.body);
console.log(Ext.getCmp(nodeId));
console.log(Ext.getCmp('treeview-1016-record-02001001'));
console.log(ownertree.view.body.down(nodeId));
console.log(ownertree.view.body.down('treeview-1016-record-02001001'));
}
});
}
}
You can see my console.log at the end.
Here is what they give me on the javascript console (in the right order):
treeview-1016-record-02001001
The precise id I am looking for. And I also try manually in case...
h {dom: table#treeview-1016-table.x-treeview-1016-table x-grid-table, el: h, id: "treeview-1016gridBody", $cache: Object, lastBox: Object…}
I checked every configs of this item and its dom and it is exactly the part of the dom I am looking for, which is the view containing my tree. The BIG parent
And then:
undefined
undefined
null
null
Here is the item I want to access:
<tr role="row" id="treeview-1016-record-02001001" ...>
And I checked there is no id duplication anywhere...
I asked someone else who told me these methods do not work. The problem is I need to access this item to modify its cls.
I would appreciate any idea.
You are looking for Ext.get(id). Ext.getCmp(id) is used for Ext.Components, and Ext.get(id) is used for Ext.dom.Elements. See the docs here: http://docs.sencha.com/extjs/4.2.1/#!/api/Ext-method-get
Ok so finally I used the afteritemexpand listener. With the ids I get the elements I am looking for with your Ext.get(id) method kevhender :).
The reason is that the dom elements where not completely loaded when I used my load listener (it was just the store) so the Ext.get(id) method couldn't get the the element correctly. I first used afterlayout listener, that was correct but too often called and the access to the id was not so easy.
So, here is how I did finally :
listeners: {
load: function(node, records, successful, eOpts) {
var ownertree = records.store.ownerTree;
var boundView = ownertree.dockedItems.items[1].view.id;
var generalId = boundView+'-record-';
if (!node.tree.root.data.leaf) {
// Process each child node
node.tree.root.cascadeBy(function(currentChild) {
// Process only leaf
if (currentChild.data.leaf) {
var nodeId = ""+generalId+currentChild.internalId;
var index = currentChild.data.index;
if ( (index % 2) == 0 && ids.indexOf(nodeId) == -1 ) {
ids[indiceIds] = nodeId;
indiceIds++;
}
console.log(ids);
}
});
}
},
afteritemexpand: function( node, index, item, eOpts ){
/* This commented section below could replace the load but the load is done during store loading while afteritemexpand is done after expanding an item.
So, load listener makes saving time AND makes loading time constant. That is not the case if we just consider the commented section below because
the more you expand nodes, the more items it will have to get and so loading time is more and more important
*/
// var domLeaf = Ext.get(item.id).next();
// for ( var int = 0; int < node.childNodes.length; int++) {
// if (node.childNodes[int].data.leaf && (int % 2) == 0) {
// if (ids.indexOf(domLeaf.id) == -1) {
// ids[indiceIds] = domLeaf.id;
// indiceIds++;
// }
// }
// domLeaf = domLeaf.next();
// }
for ( var int = 0; int < ids.length; int++) {
domLeaf = Ext.get(ids[int]);
if (domLeaf != null) {
for ( var int2 = 0; int2 < domLeaf.dom.children.length; int2++) {
if (domLeaf.dom.children[int2].className.search('tree-even-node') == -1){
domLeaf.dom.children[int2].className += ' tree-even-node';
}
}
}
}
},
With ids an Array of the ids I need to set the class.
Thank you for the method.
function getCode() {
if (window.location.href.indexOf("?discount=")) {
var url = (document.URL);
var id = url.substring(url.lastIndexOf('=') + 1);
window.alert(id);
return true;
} else {
return false;
}
}
Purpose: When people go to our "Service Request" page using a QR code that has a substring of ?discount=1234. I have been testing by creating an alert box with the discount code showing. Eventually I want to be able to populate that "1234" automatically into a "Discount Code:" text field on page load.
The above is a mixture of a few suggestions when I researched it.
Result: Going to example.com/serviceRequest.html?discount=1234 gives me the appropriate alert "1234", as I want... Going to example.com/serviceRequest.html gives me the alert http://example.com/serviceRequest.html, but I don't want anything to happen if "?discount=" is null.
Any suggestions?
indexOf returns -1 if the search pattern doesn't exist. In JavaScript, anything not a 0 or false or undefined is considered true.
So your line of:
if(window.location.href.indexOf("?discount=")) {
Would better search as:
if(window.location.href.indexOf("?discount=") > -1) {
Try changing your if-statement to:
if(window.location.href.indexOf("?discount=") != -1)
Look up the documentation for ".indexOf". It returns -1 for not found and >= 0 if it is found.
...indexOf("?discount=") >= 0
substring and indexOf return -1 if the text is not found, so you can test for this. E.g.
function getCode() {
if(window.location.href.indexOf("?discount=") != -1) {
var url = (document.URL);
var id = url.substring(url.lastIndexOf('=') + 1);
window.alert(id);
return true;
}
else {
return false;
}
}
You just need to test the indexOf value:
function getCode() {
if (window.location.href.indexOf("?discount=") !== -1) {
var url = (document.URL);
var id = url.substring(url.lastIndexOf('=') + 1);
window.alert(id);
return true;
}
else {
return false;
}
}
So the quick and dirty answer would be
var discount = window.location.search.split("?discount=")[1];
alert(discount);
But this doesn't take into account the occurence of other query string parameters.
You'll really want to parse all the query parameters into a hash map.
This article does a good job of showing you a native and jQuery version.
http://jquery-howto.blogspot.com/2009/09/get-url-parameters-values-with-jquery.html