The cancel button for an individual item should be present only when the item has not yet started or is still downloading. All other items in this menu should be disabled by default; their availability and behavior is defined elsewhere in this specification.
Test case: sc Start installing something in USC. Its items should be disabled. Software item tiles Errata: The installed emblem should be at the bottom left of the icon, not the bottom right.
Tiles are used to present software items on the home screen , category screens, subcategory screens, search results, and other listings. Tiles have a minimum width. In an area that is to be filled with tiles, the number of tiles on each row should be based on the minimum width, with each tile stretching equally to fill any remaining width.
If the icon is scalable, or larger than 4 em in either dimension, it should be scaled down proportionally so that it is 4 em in its largest dimension. Title , ellipsized in the middle if necessary to fit on one line.
Average rating omitted entirely if there are not enough ratings. Subcategory name if it has one, otherwise its Category name , either ellipsized at the trailing end if necessary to fit on one line.
A category-specific software item tile is identical except that it omits the category name because it would be identical for every item.
And a subcategory-specific software item tile omits the category and subcategory names. The whole tile should have a pointing-hand pointer when moused over, and should be a darker shade whenever it is being clicked bug Single-clicking should navigate to that item. Software tile view A software tile view is used to present software items on various screens. It includes a heading, followed by a grid of software item tiles. Where there is no limit on the number of items shown, initially only 60 items should be loaded and shown initially 60 because that will produce a decent batch of complete rows whether there are 2, 3, 4, 5, or 6 tiles per row.
If there are more items, the bottom of the view should have enough space for a spinner. When you scroll to the bottom of the view, the spinner should appear until the next 60 items load and replace it. If either row of text is wider than the space available, it should be ellipsized at the trailing end. If the width of those three things is greater than the width of the list, the stars and number should together be flush at the trailing end of the row, while the title is ellipsized at its end.
Previously the stars were always flush at the trailing end, making it difficult to see which rating belonged to which item. Moving them next to the title means stars are not aligned for different rows, but that matters little, because the ratings will much more often be used for sorting than for direct comparison.
Activating it should navigate to the software item screen. Neither button should have an access key because that would interfere with typing letters to navigate the list. Press Ctrl F; the search field should be focused. When an item is being installed, being removed, having its add-ons changed, or queued for any of those tasks, the trailing end of the row should have a progress bar showing progress of the task. If the item is being installed or is having its add-ons changed, it should also have an icon-only cancel button.
By default, none of the rows in a software list view should be selected. If no item is selected, pressing the Down arrow key should select the first row, and conversely pressing the Up arrow key should select the last row. If the view does not allow selection, the arrow keys should scroll the view without highlighting rows.
Unless otherwise specified, a software list view should always have a vertical scrollbar. A software list view should never have a horizontal scrollbar. Software sources In most cases, the collection of software that USC presents should consist of the aggregate of available software items from all enabled software sources, plus any software currently installed that has no known source. Otherwise, the same label as is used in the file manager. The installed software sources should consist of all those items in this list from which you have installed any software.
Install a package from that PPA. Test case: sc Download and install a standalone. Determining information about software items Most information about a package — its title, short name, summary, and license info — should come from Aptdaemon.
These are the exceptions: Icon and genre The icon should be the usual icon for the package , except that unless otherwise specified, a package that is currently installed should have its icon overlaid in the bottom left corner with the installed checkmark emblem.
If you want this to be more specific bug , do what you can to get DEP-5 implemented. If an item has a secondary category, it may also have a secondary subcategory. Each category, and each subcategory, should have its own icon. Ideas were invited on the Classification page. If it has a Section: that matches one of the subcategories listed above, then: Use the Section: value to determine the subcategory from the table.
If it has a. If it has a Section: that matches one of the categories listed above, then: Use the Section: value to determine the category from the table. The item has no secondary category or subcategory. The requirements should be comma-separated, each preceded by a text-colored checkmark if it detectably meets that requirement, an error-colored cross if it detectably fails, or nothing if the requirement is currently untestable. In addition, whenever the computer detectably does not meet the requirements, immediately above the installation state bar should be an extra bar containing a warning specific to the unmet requirements, with a icon aligned with the button below.
Activating that command should focus the search field, and even if it is focused already select its entire contents. Inside the leading end of the field should be a symbolic magnifying glass icon. Clicking the icon should focus the field and select its entire contents. When and only when the search field is not empty, the trailing end of the field should have a symbolic clear icon.
Clicking the icon should focus the field and clear its contents. Besides the normal behavior for text fields, whenever the insertion point caret is at the trailing end of the search field, pressing the Down arrow key should focus the contents of the main pane and select the first item — such as the first category in the home screen , or the first result in any list of search results.
Interpreting search text When searching anywhere in USC, any word in the search string that is followed by a space or punctuation should be treated as a a complete word, while any word that is not should be treated as if it may be either a complete word or the beginning of a word. For the sake of people who are unfamiliar with how they should use the search, there should be a greylist of words that are downplayed when searching.
In any other search that contains one or more greylisted words, the greylisted words should be ignored: only the words that are not greylisted should be searched for. However, once the results are chosen, the presence of any greylisted words should cause a result to appear higher in the list. Instead, provide a list of words in your language that people are likely to include in a search but that should normally be ignored in the search.
USC should return exactly the same results for both searches, though possibly in a different order. So clicking Back is one way to clear a search. Type Ctrl F; the search field should be focused. Press the down arrow key once; Firefox should be selected in the results. Choose Back again; USC should return to the home screen. Suggestions: Try the 2 items in Internet that match. The rest of the main pane should contain search results for that scope.
For example, in a subcategory, the results should be limited in scope to that subcategory. If the search terms exactly match a package name, that package should be returned first in the results, even if the package was hidden by default. Testers You can help us improve the search function by testing it in successive versions.
Unlike usual search results, this list should be sorted in exactly the same order as the search string. The bottom of the pane should have an action bar. Nothing should change. If installing the software would involve removing ubuntu-desktop , the package should be treated as uninstallable just as it is with software updates bug Try again in a day or two.
If this problem persists, contact the software vendor. If the Launcher was in auto-hide mode, it should then hide again. Trying to launch the item should do nothing. While the item is installing, the Launcher should show installation progress with an overlaid progress bar. Trying to launch the item should still do nothing. The item should be installed with the standard interface.
Otherwise it should be the standard status text for the operation. If installation was successful, the launcher item should flash and become launchable. Packagers and testers Wait, what? Fifty percent? Perhaps not, but even a progress bar that varies a bit in speed is infinitely more accurate than one that fills up completely only to jump back to zero for the next step.
And you can help us make it even better. Removing software The Remove function should be disabled by default, enabled only when one or more items are selected or you are at an individual software item. When you request to remove a software item: The Remove function for that item should become disabled, and remain disabled until the removal has been completed or cancelled.
USC should handle inconsistent package state if necessary. The package removal should be presented in the standard way. What about where X depends on a virtual package that A1 or A2 provide? Perhaps show a menu of the options? This applies not just to add-ons but to dependencies too.
Maybe checked and disabled? Maybe checked by default? The list of add-ons for the item should be presented as a series of checkboxes. Recommended add-ons should be listed first alphabetically , then suggested add-ons alphabetically. The package name should be a link that navigates to the software item screen for the package. In Bridge Construction Set you build a Ubuntu Software Centre. Steam Client now available in Ubuntu Software Center by Canonical on 14 February Starting today, users can install the Steam Client with a few simple clicks in our Software Center, the fastest and safest way to install thousands of paid Create a free Team What is Teams?
Learn more. Can't find the Ubuntu software center Ask Question. Asked 3 years, 6 months ago. Active 3 years, 6 months ago. Viewed 3k times. Starting software-center on console fails due to The program 'software-center' is currently not installed.
You can install it by typing: sudo apt install software-center. Improve this question. Karl Richter 5, 16 16 gold badges 59 59 silver badges 91 91 bronze badges. Alaa Mohamed Alaa Mohamed 11 1 1 silver badge 2 2 bronze badges.
Possible duplicate of Ubuntu Because of the flawed rating system, it's hard to sort out the best apps when browsing. Since you can only sort by Top Rated or Name, you'll need to rely on the reviews when exploring new apps.
To make matters worse when searching or browsing, you see results from every repository installed on your system, including Snaps. This often results in confusing duplication. Ubuntu Software is also useless when it comes to installing system components and lower-level packages. You won't always need to do this sort of thing because it's uncommon on modern Linux. However, as soon as you customize things, on a slightly deeper level, it will come up.
When it comes down to it, Ubuntu Software only works well when you know which app you want to install. For most people, that defeats the purpose, especially when you can open a terminal and type:. For anyone serious about using Ubuntu as their main OS, it's recommended that you install Synaptic or learn to use apt. Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile. Measure ad performance.
Select basic ads. Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. Gary Newell. Updated on March 30, Tweet Share Email.
Linux Switching from Windows. In This Article. How to Start Ubuntu Software. The Main Interface.
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