I want to have a panel, with two columns.
The first column will contain a list of beans, and the right one a form panel for editing those beans. What I want to do, is that list height is the same as height of the form panel on the right. My list of beans will be larger and larger over time, so it's height will probably exceed form height. When that happens, there should be a scrollbar showed for the list. I also don't want to set explicit size for list and my form panel (it should be flexible because some time I will add or remove some form fields).
I'm basically new to GXT. I'm looking forward for some proposals.
Cheers,
jjczopek
Try setting the CSS style overflow-y: auto; with max-hight on the Panel (div?) on which you need a scroll bar. That should solve your problem.
Try to set Fill or Fit Layout.
Related
I am using the Material UI Text Field component as a search bar in my app. On one of the pages, I have it in 2 spots, one on the outside of the page, and another inside my DevExtreme Data Grid.
See here
For whatever reason, this shrinks the search bar, despite it being the exact same component being used in 2 spots.
My question is, what causes MUI to shrink the height of their text input field so that I can fix it accordingly inside of my data grid?
I've tried adjusting line-height, padding, margin's, etc all inside the data grid, unfortunately to no avail. The only thing I've noticed is that deep in the inspector tool, the shrunken search bar has a height of 1.435em, and checking that off will cause the search bar to correct itself to the standard height.
We have many screens where different types of GWT panels are used.
One common problem across many screens is that, content size is derived at runtime. So, if I define a height for a panel(Vertical/Horizontal/DockPanel) and when any new components are getting added within panel or content is more, panel height remains the same. So we are not able to see the contents. UI look and feel becomes worst.
How do we handle the height problems? Do we have to manually code to adjust every panel/widget height when something gets changed in screen. Is it not a very bad way of coding?
Also, now we have datagrids at some places, if no of records are very less, we see a huge space left out below datagrid, not sure how do we handle these cases?
Updated below with few examples as per the comment:
Do you mean to say that whenever we know that content grows vertically, we can always choose FlowPanel. Because, some of the screens we have used Vertical panel/Horizontal Panel and inside that when user clicks something a new fields getting added and shown. So Vertical Panel/Horizontal Panel height automatically not getting adjusted. One more example is that we have main Vertical Panel within a Dock Layout Panel content area and inside that there are some widgets whose content may vary. So now if I use a FlowPanel to the content which varies in size, what about outer panels? Will get it adjusted? Again to say the kind of panels we have used - Dock Layout Panel is used with fixed header, footer, left menu and Content area. A scroll panel is used within Content area. All our different widgets go inside this which is mix and match of horizontal/vertical/datagrids..etc.
In GWT (and HTML) you can either set the height of a panel or let it expand naturally. In general, once you set the height of something, you lose the ability to let it expand naturally.
Some Panels in GWT implicitly set their own height (or require that you set their height) and so are never good choices for dynamically sized content. LayoutPanels and ScrollPanels, for example, can never adjust dynamically, and expect you to provide size information programmatically. FlowPanels and HTMLPanels, on the other hand, are great for dynamic heights and would rather you not set their height explicitly.
If you want a scrolling panel, of course you have to define how high it should be - how else could it know when to scroll and when to just get bigger? But, you can put a FlowPanel (which expands automatically) inside a ScrollPanel (which you have set at 800px or whatever). Then, as you add content to the FlowPanel, it will expand inside the ScrollPanel. Users can then scroll to see different parts of the FlowPanel.
Trouble-shooting tips:
Make sure you aren't setting the height on panels that you want to expand naturally
Make sure you ARE setting the height on panels that should always be the same size
Try using FlowPanels instead of Horizontal/VerticalPanels
*LayoutPanels and AbsolutePanels always need explicit sizes and can never grow dynamically as you add more content. Anything you want to grow with content should probably be a FlowPanel or HTMLPanel.
I need a scrollPanel with a verticalpanel and a tablayout panel inside it. Problem is, unless I specify the exact height of the tablayoutPanel, the tab content does not show. Any known fixes/ workarounds?
Not the answer you are looking for, but might spark an idea for another way to do this - what does it mean to scroll a tab panel? As soon as the user starts scrolling down, the tabs will no longer be visible to change tabs, user will always need to scroll all the way to the top to consider any other tab.
That said, any of the *LayoutPanel classes GWT has introduced that implement ProvidesResize, RequiresResize, etc need sizing to properly draw themselves and their content. This is why you are having the issue. These classes are designed to size their children, not to just consume as much space as those children require.
Closest I can suggest to a workaround (except for putting a ScrollPanel inside the TabLayoutPanel instead) would be to know the height of the current tab's contents, add to that the height of just the tabs themselves, and assign that as the height of the tabpanel. Not a very nice solution, but it might get you by.
I am using the gwt visualization API. I use the Table widget and would like to specify the height using the setHeight() method.
When I put enough records, the vertical scroll bar shown up. The width of the table no longer fit the data after the scroll bar show up. The column labels are long records are forced to split to two lines:
How can I avoid it ?
(I don't want to fix the width of the table as the data is dynamic and I will add arbitrary columns also).
Ok, I'm not particularly familiar with the "gwt visualization API" but the the first solution which comes to mind, is that you always show the scroll bars and make the field a little bit bigger.
Her a little code example:
ScrollPanel sp = new ScrollPanel();
sp.setAlwaysShowScrollBars(true);
or if you are using UiBinder:
<g:ScrollPanel ui:field="scrollPanel" alwaysShowScrollBars="true">
You can also let a scroll panel appear in the bottom so your lines still appear in the bottom, but I don't thin that's what you want...
Regards,
Stefan
I want to create a custom panel/layout and it's seeming pretty impossible at this point. I need the components to start in the upper left corner and stack downward until they fill the panel vertically, then wrap to the top of the next column and so on until they eventually fill the screen and create a horizontal scrollbar. After an entire day of trying I've decided it's only possible by abusing GWT (and I assume the whole web browser) adding crippling complexity and terrible performance. Please let me know if I'm missing something and layout like this is possible. Thank you!
Lame solution: Have a small (almost invisible) AbsolutePanel where every string is displayed within a div and measured (getClientWidth/height()). Then each panel can calculate it's size based on the strinsg, borders, padding, etc. it contains. Once each panel knows it's size, they can be layed out relative to the sizes of the other panels in the contianer.
Check out FlexTable, which allows you to specify the row,column for the widget to be added