visibility

问题 If you change the visibility of an element visibility: hidden , will a click event still fire if the user clicks it? I want to "hide" an element (i.e. <span> ) and disable the click event from firing, but retain is position in the normal flow of the document. So display: none; won't work since it removes the document from the normal flow, but was wondering what are my other options via CSS without actually handling the click event and using preventDefault()? 回答1: No it won't fire when

问题 Say I have this piece of code <p:dataTable styleClass="scheduleTable" value="#{todaySchedule.hours}" var="hour"> <p:column headerText="Hour" styleClass="hourColumn" > #{hour.time} </p:column> </p:dataTable> and in a class called todaySchedule, have a method public List<Hour> getHours() { final List<Hour> hours = IntStream.range(0, Hour.TIME.values().length) .mapToObj($ -> new Hour()).collect(Collectors.toList()); for (int i = 0; i < 5; i++) { hours.get(i).setHour(1); } return hours; } and

问题 I would like to hide a groupox from my WPF app and to manually enable it when I need it via a keypress code when app is active(not minimized) this example works sometimes with just one keypress, but I need a sequence protected override void OnPreviewKeyDown(KeyEventArgs e) { base.OnPreviewKeyDown(e); if (e.Key == Key.B) { bdgb.Visibility = Visibility.Visible; } } 回答1: You could for example override the OnPreviewKeyDown method of your window, e.g.: protected override void OnPreviewKeyDown

问题 I have a Windows Form in a C# program with the FormBorderStyle set to FixedToolWindow . The window doesn't have the normal control box, but the user can still minimize it from a menu. There is also a setting for the window to start in a minimized state. When the user clicks the minimize button it called the following function: private void minimizeWindow() { timer1.Enabled = false; this.WindowState = FormWindowState.Minimized; this.Hide(); } The window becomes a small box in the bottom left

问题 This is the handler, in the main Thread, which shows and dismisses a progress dialog. public static final int SHOW = 0; public static final int DISMISS = 1; public Handler pdHandler = new Handler() { @Override public void handleMessage(Message msg) { Log.i(TAG, "+ handleMessage(msg:" + msg + ")"); switch(msg.what) { case SHOW: pd = ProgressDialog.show(LogViewer.this, "", getText(R.string.loading_msg), true); break; case DISMISS: if(pd != null) { pd.dismiss(); pd = null; } break; } } }; The

问题 The following Java programs compiles successfully. I am expecting an error in the statement y.className = "No class name."; since the private variable className are accessed outside its class. class t { public static void main(String[] r) { Y y = new Y(); y.className = "No class name."; y.echoClassName(); } static class Y { private String className = "Class Name is Y."; public void echoClassName() { System.out.println(className); } } } Why it shows no error? 回答1: The scope of a private

问题 I'm looking for a generic (native) Javascript function that could tell if an element is visible, that can take into account elements in a "carousel" (aka "slider"); These are usually containers with "slides", each an element positioned to the left (or right) of the previous one - but only one of them is actually visible. An example can be seen in this web page: http://www.technobuffalo.com/2015/07/22/iphone-7-concept-sports-quad-hd-retina-display-wireless-charging/ EDIT: An example for a

问题 I am using the LinearLayout and inside there's button I am making visibilty gone based on supported states. SupportedStatuses are true then making Button as Visible but SupprtedStatuse are false then making button as Gone. This is in a header and Button is Gone but still takes up the space. Here is the Layout which I am using. <LinearLayout android:id="@+id/llparentView" android:layout_width="match_parent" android:layout_height="wrap_content android:orientation="vertical"> <Button android:id=

问题 I reverse coded a script I found online and it works well, the only problem is that the hover image loads at complete visibility until the action of hover occurs. This is the script: $(document).ready(function() { $("img.b").hover( function() { $(this).stop().animate({"opacity": "1"}, "slow"); }, function() { $(this).stop().animate({"opacity": "0"}, "slow"); }); }); </script> This is the CSS file: <style> div.fadehover { position: relative; } img.b { position: absolute; left: 0; top: 0; z

问题 I want my application to present the default menu button within my Galaxy nexus. However when I load my app it removes the menu button. I have tried programmatically to show the menu button: first it tried the OnCreateOptionsMenu but it doesnt run when my activity is being created. Then I tried to run the openOptionMenu() within the onCreate method of my activity but no good. 回答1: I want my application to present the default menu button within my Galaxy nexus I am uncertain what "the default