Content composer for third-party applications

1. A computer-implemented method comprising:

by a computing device of a first-party system, presenting third-party content on a first user interface associated with a third-party application on a display of the computing device;

by the computing device, presenting an interactive comment icon in connection with the third-party content on the first user interface, the interactive comment icon being associated with the first-party system and enabling a user to compose a comment concerning the third-party content; and

by the computing device, while the user is interacting with the third-party content on the first user interface, in response to the user activating the interactive comment icon,

removing the third-party content from display by transitioning from the third-party content on the first user interface to a comment-post interface comprising a content icon representative of the third-party content by simulating an animation of an image of the third-party content folding in half until completely closed and replaced by the content icon representative of the third-party content, the comment-post interface being displayed on a second user interface associated with the first-party system, the second user interface configured to replace the first user interface on the display after the transition;

enabling the user to input the comment inside the comment-post interface; and

enabling the user to submit the comment to the first-party system for publication; and

by the computing device, presenting the comment with the content icon in the second user interface associated with the first-party system.

2. The method of claim 1 , wherein:

the first-party system is a social-networking system;

the user is a member of the social-networking system;

the user interacts with the third-party content through the social-networking system.

3. The method of claim 1 , further comprising

while the user is interacting with the third-party content, in response to the user activating the comment icon, presenting the third-party content as an application icon next to the comment-post interface while the user is inputting the comment inside the comment-post interface.

4. The method of claim 1 , further comprising

enabling the user to preview the comment as it would appear when published by the first-party system.

5. The method of claim 1 , further comprising

publishing, by the first party, the comment as a user comment concerning the third-party content.

6. One or more computer-readable non-transitory storage media embodying software that is operable when executed to:

present third-party content on a first user interface associated with a third-party application on a display of the computing device;

present an interactive comment icon in connection with the third-party content on the first user interface, the interactive comment icon being associated with the first-party system and enabling a user to compose a comment concerning the third-party content; and

while the user is interacting with the third-party content on the first user interface, in response to the user activating the interactive comment icon,

remove the third-party content from display by transition from the third-party content on the first user interface to a comment-post interface comprising a content icon representative of the third-party content by simulating an animation of an image of the third-party content folding in half until completely closed and replaced by the content icon representative of the third-party content, the comment-post interface being displayed on a second user interface associated with the first-party system, the second user interface configured to replace the first user interface on the display after the transition;

enable the user to input the comment inside the comment-post interface; and

enable the user to submit the comment to the first-party system for publication; and

present the comment with the content icon in the second user interface associated with the first-party system.

7. The media of claim 6 , wherein:

the first-party system is a social-networking system;

the user is a member of the social-networking system;

the user interacts with the third-party content through the social-networking system.

8. The media of claim 6 , wherein the software is further operable when executed to

while the user is interacting with the third-party content, in response to the user activating the comment icon, present the third-party content as an application icon next to the comment-post interface while the user is inputting the comment inside the comment-post interface.

9. The media of claim 6 , wherein the software is further operable when executed to enable the user to preview the comment as it would appear when published by the first-party system.

10. The media of claim 6 , wherein the software is further operable when executed to publish, by the first party, the comment as a user comment concerning the third-party content.

11. A system comprising:

one or more processors; and

a memory coupled to the processors comprising instructions executable by the processors, the processors operable when executing the instructions to:

present third-party content on a first user interface associated with a third-party application on a display of the computing device;

present an interactive comment icon in connection with the third-party content on the first user interface, the interactive comment icon being associated with the first-party system and enabling a user to compose a comment concerning the third-party content; and

while the user is interacting with the third-party content on the first user interface, in response to the user activating the interactive comment icon,

remove the third-party content from display by transition from the third-party content on the first user interface to a comment-post interface comprising a content icon representative of the third-party content by simulating an animation of an image of the third-party content folding in half until completely closed and replaced by the content icon representative of the third-party content, the comment-post interface being displayed on a second user interface associated with the first-party system, the second user interface configured to replace the first user interface on the display after the transition;

enable the user to input the comment inside the comment-post interface; and

enable the user to submit the comment to the first-party system for publication; and

present the comment with the content icon in the second user interface associated with the first-party system.

12. The system of claim 11 , wherein:

the first-party system is a social-networking system;

the user is a member of the social-networking system;

the user interacts with the third-party content through the social-networking system.

13. The system of claim 11 , wherein the processors are further operable when executing the instructions to

while the user is interacting with the third-party content, in response to the user activating the comment icon, present the third-party content as an application icon next to the comment-post interface while the user is inputting the comment inside the comment-post interface.

14. The system of claim 11 , wherein the processors are further operable when executing the instructions to enable the user to preview the comment as it would appear when published by the first-party system.

15. The system of claim 11 , wherein the processors are further operable when executing the instructions to publish, by the first party, the comment as a user comment concerning the third-party-content.

16. The method of claim 1 , wherein transitioning from the third-party content to the comment-post interface comprises an animation sequence showing the transition from a user interface of the third-party content to the comment-post interface.

17. The media of claim 6 , wherein transitioning from the third-party content to the comment-post interface comprises an animation sequence showing the transition from a user interface of the third-party content to the comment-post interface.

18. The system of claim 11 , wherein transitioning from the third-party content to the comment-post interface comprises an animation sequence showing the transition from a user interface of the third-party content to the comment-post interface.