UIP-1976, UIP-1975 Release over_react 1.5.0 (HOTFIX)

[greglittlefield-wf]

Copy missing updates from https://github.com/Workiva/web_skin_dart/pull/608

Testing:

Verify that the dynamic-height demo in w_virtual_components master is no longer broken with this dependency override:

dependency_overrides:
  over_react:
    git:
      url: git@github.com:greglittlefield-wf/over_react.git
      ref: resize_sensor_quick_mount

---

Ultimate Problem

ResizeSensor (especially its componentDidMount) was too slow to use on VirtualList items in order to support dynamic-height items (UIP-1511).

Solution

• Add quickMount prop to ResizeSensor, which minimizes layouts caused by accessing element dimensions. When enabled:
  • The initial dimensions will not be retrieved, so the first onResize event will contain 0 for the previous dimensions.
    • onInitialize will never be called.
    • Sensor scroll events fired as a result of resetting the component on mount will be ignored until one animation frame later, preventing additional sensors dimension accesses.
      • This can't be done for normal sensors, since it causes timing issues in tests.
  • The sensors will be initialized/reset in the next animation frame after mount, as opposed to synchronously, helping to break up resulting layouts.
• Add docs section for props.quickMount
• Update Sauce iframe styling to move it within the viewport, to prevent animation frame throttling in Firefox

Semi-unrelated changes

• Remove flexbox styles for Safari <9 (no longer supported)

[aviary-wf]

Raven

Number of Findings: 0

[jacehensley-wf]

+1

[jacehensley-wf]

+10

• Dynamic height lists works as expected

[jacehensley-wf]

+1

[leviwith-wf]

QA Resource Approval: +10

• dynamic height working as expected again

---

• Dev +1’s on MPR
• Dev +1’s present on related CRs
• Version info updated
• Tests Pass
• Rosie run complete/evaluation clean

Ready for merge and tag.