I have a TreeViewer as shown here:
.
I have a text field to enter the percentage values. Suppose the percentage entered is 30 %, I should hide all the rows that are below 30% and display only the rows above 30%. Is there any row filter that I can use for my TreeViewer? It would be great if some examples are provided.
I am using e4 RCP. I want to do View based filtering and prefer not to change the Model.
You use a class which extends ViewFilter to filter the rows in a tree viewer.
The main method to override in the ViewFilter is the select method:
#Override
public boolean select(Viewer viewer, Object parentElement, Object element)
here you are given the object being considered (element) along with its parent and the viewer. You return true to keep displaying the element and false to hide it.
You can have several filters active if required, set them in the tree viewer using:
treeViewer.setFilters(array of view filters);
You may need to call
treeViewer.filter();
when something changes in the tree which requires the filters to be re-run.
Related
https://issues.apache.org/jira/browse/PDFBOX-2148
When there are multiple copies with the same field name, the getFullyQualifiedName for each kid in the list of PDField objects returns the name of the parent, followed by .null. So if the parent field is called Button2 and it has 4 instances the result of printing out all the names will be:
Button2.null
Button2.null
Button2.null
Button2.null
According to the comments to the question, the OP refers to PDFBox 2.0.x versions, in particular 2.0.6.
getKids()
The method getKids() is undefined for the type PDField
In PDFBox 2.0.6 there are two immediate sub-classes of PDField. Different variants of the former (1.8.x) getKids() method are implemented in there:
PDNonTerminalField - the method retrieving the kids in this class is getChildren() and returns a List<PDField>, a list of form fields.
PDTerminalField - the method retrieving the kids in this class is getWidgets and returns a List<PDAnnotationWidget>, a list of widget annotations.
name of the parent, followed by .null
When there are multiple copies with the same field name, the getFullyQualifiedName for each kid in the list of PDField objects returns the name of the parent, followed by .null
This is not the case in PDFBox 2.0.x.
In the sample document attached to the PDFBox issue PDFBOX-2148 PDFBox now correctly finds only a single field which appropriately is named "Button2". This field is a PDTerminalField and has 4 widget annotations. The class of the latter, PDAnnotationWidget, has no getFullyQualifiedName method, so there are no ".null" names.
Thus, this problem is gone.
FQN of duplicate fields
(from the OP's comment responding to "What exactly is your question?")
how to get Fully Qualified Name of duplicate fields in pdfbox
There are no duplicate fields in (valid) PDFs, for a given name there is at most a single field which may have multiple widgets. Widgets do not have individual FQNs.
Thus, what you call "duplicate fields" in your example document actually is a single field with multiple widgets; the name of that field is "Button2" and can be retrieved using getFullyQualifiedName().
which page which form field
(from the OP's comments to this answer)
but how to get current page no in pdfbox.. for example there are 3 page and in page 2 there is a form field so how can i get which page which form field ?
All PDAnnotation classes, among them PDAnnotationWidget, have a getPage() method returning a PDPage instance.
BUT: As specified in ISO 32000-1, annotations (in particular form field widgets) are not required to have a link to the page on which they are drawn (except for screen annotations associated with rendition actions).
Thus, the above mentioned method getPage() may return null (probably more often than not).
So to determine the respective pages of your widgets, you have to approach the problem the other way around: Iterate over all pages and look for the annotation widgets in the respective annotation array.
For PDFBox 1.8.x you can find example code in this stackoverflow answer. With the information given in the previous parts of this answer it should be easy to port the code to PDFBox 2.0.x.
checkbox and radio button
(also from the OP's comments to this answer)
one more issue if i am using checkbox and radio button both then field.getFieldType() output is Btn for both. how to identify it?
You can identify them by inspecting the field flags which you retrieve via fields.getFieldFlags():
If the Pushbutton flag is set (PDButton.FLAG_PUSHBUTTON), the field is a regular push button.
Otherwise, if the Radio flag is set (FLAG_RADIO), the field is a radio button.
Otherwise, the field is a check box.
Alternatively you can check the class of the field object which for Btn may be PDPushButton, PDRadioButton, or PDCheckBox.
Beware: If a check box field has multiple widgets with differently named on states, this check box field and its widgets act like a radio button group! And not only in theory, I've seen PDFs with such check box fields in the wild.
To really be sure concerning the behavior of the fields, you therefore also should compare the names of the on states of all the widgets of a given check box.
in my application i have a dropdown which is div object.the dropdown contain names and checkboxes.i need select the checkbox based on name. checkbox dont have any name.just index.can any one suggest how to get chaild items or properties of the objects for div object.
and the second question is i have tree view .which is teleric object.RFT is unable to find the object.it identifying as one all tree view is one object.its not identifying the childs,sub tree items....
so please help me on this two issues.
Hi you can get the checkboxes as follows:
void getCheckBoxes(TestObject parentDiv)
{
TestObject[] checkboxes = parentDiv.find(atDescendant(".class","Html.INPUT.checkbox"));
System.out.println("Found " + checkboxes.length);
//Go through them , and decide which one to select.
for(TestObject checkbox: checkboxes)
{
System.out.println("Checkbox Value: "+ checkbox.getProperty(".value"));
}
}
you can call the above method and pass it the parent DIV object.
About the second question:
You have not mentioed how does RFT recognize the one object for the tree ( means which proxy does it use as per the object map's adminitrative properties for that object).
Usually controls like tree /grid etc are recognized as one control and the items of these controls as "Subitem" which are found by specifying subitem as atPath("xyz->abc") etc.
I have a scrollableView with several views inside and I'd like to add item to some of these view if they meet a certain criteria, like if they have data attached or not. Also I'm using Alloy, here's my markup
<ScrollableView id="scrollableView">
<View id="view" class='coolView'></View>
...
</ScrollableView>
To know if there are data attached I check the currentPage attribute like so:
function updateCurrentView(e) {
currentView = e.currentPage;
}
But I have no idea how to add an item to the current View.
Edit: To add some clarification, I have a label which when clicked allow me to choose two currencies, when chosen these currency pairs are saved in the database and should be displayed instead of the label. So my guess was to check whether the current view has currency pair saved.
There are 2 things to take care of here:
1.Whenever a currency is selected,immediately label on that particular view will change.
2.Whenever the scrollableView is loaded,it must always refer to the database if a currency is selected.
First one can be done as:
1.Get the instance of scrollableView using the getView method of alloy controller.Pass the id of the scrollableView to it.Lets call it myScrollableView.Refer this for more info.
http://docs.appcelerator.com/titanium/latest/#!/api/Alloy.Controller
2.Use var currentView=myScrollableView.getCurrentPage() to the get the current page which will be a number.
3.Now use the scrollableView instance to get all the views.
var viewArray=myScrollableView.getViews();
4.viewArray[currentView] will give you the view of current page.After you have got the view you can change the desired label using:
viewArray[currentView].children[positionOfTheView]
The "positionOfTheView" can be obtained by printing the viewArray[i].children array using Ti.API.info.
Second thing can be accomplished as follows:
1.Get the instance of scrollableView using the getView method of alloy controller.Pass the id of the scrollableView to it.Lets call it myScrollableView.Refer this for more info.
http://docs.appcelerator.com/titanium/latest/#!/api/Alloy.Controller
2.Now use the scrollableView instance to get all the views.
var viewArray=myScrollableView.getViews();
3.This is a JavaScript array of all the views in the scrollableView. Now iterate through this array and according to the data in the database,change the concerned view using:
viewArray[i].children[positionOfTheView]
The "positionOfTheView" can be obtained by printing the viewArray[i].children array using Ti.API.info.
I would like to update form fields "on-fly" after button press that triggers python function.
Something like onchange that allows to return field values, but I need to do it after button press.
The situation is, to create module, that will allow to search for company information in public company register based on entered company registration ID.
The best would be, to show up some popup window with updated fields list and user has to confirm, wether to update fields values or not.
Thank you.
You can create a wizard (osv.osv_memory class) to simulate a dynamic popup window.
To populate this wizard, you can use the returned action descriptor of your python function, like this :
return {'res_model':'your.osv.memory',
'view_mode':'form',
'view_type':'form',
'target':'new',
'context':{...},
}
Thanks to your algorythm that get public company information, you just have to put you're fields values on the context, like you would do in a write() method.
Override your default_get() method of your osv_memory, which receives your context, and populate your wizard like you want.
I think a simple text fields on your wizard will be efficient to display fields updated values, and 2 buttons : cancel and OK (which will call the write method to apply fields values, always using your context).
I have a grouped Checkbox, and it has 4 checkboxes in it.
When the user selects a checkbox I need to filter a data store based on the value of the text box. When i select 2 textboxes, I get the output of ["Albert","Francis"], and when I select only the 1st textbox I get ["Albert"] and so forth.
Now, i need to know how to filter this ?
onCheckBoxGroupChange : function (field,newValue,oldValue,options) {
var chkv=newValue.chb;
console.log (chkv);
var st= Ext.getStore('People');
st.on('load', function() {
st.filter({
filterFn: function(rec) {
return rec.get('name') == chkv;
The problem I am having is, when I select both the CheckBoxes, chkv becomes ["Albert","Francis"] (Like an array), therefore I am unable to return the value since rec.get('name') == chkv; doesn't look for an array.
Can someone help me?
what about:
filterFn: function(rec) {
return Ext.Array.contains(chkv, rec.get('name'));
}
I want to make sure you know that you do not have to reload the store if you want to filter it. It looks like that is what you are doing in the snippet you provided above.
There are other problems actually, what your onCheckBoxGroupChange handler will actually do (if you leave it the way you have it above), is the following:
Every time a user clicks a checkbox it will first reload the store from the server, and then add the selected filter to the store's filters and then filter the store by the filters it has saved.
E.g.:
User clicks "Albert" checkbox
Store reloads
Store adds `["Albert"]` filter function
Store performs filtering with `["Albert"]` filter function
User clicks "Francis" checkbox
Store reloads
Store adds `["Albert", "Francis"]` filter function
Store performs filtering with `["Albert"]` filter function
Store performs filtering with `["Albert", "Francis"]` filter function
User unclicks "Albert" checkbox
Store reloads
Store adds `["Francis"]` filter function
Store performs filtering with `["Albert"]` filter function
Store performs filtering with `["Albert", "Francis"]` filter function
Store performs filtering with `["Francis"]` filter function
You would just progressively get more and more filters. Plus unnecessarily reloading the store many times. I don't think that is what you are going for.
You should review the docs on datastore filtering for more data on how to go about this.
Also, in your question you said that you had this problem when you selected two checkboxes because it returned an array. According to the text of your question you are also getting an array when you select one checkbox (["Albert"]). It only has one item in it but it is an array.
That is why my solution (which requires your chkv variable to be an array) would work.